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Sample records for intermediate energy nuclear

  1. [Intermediate energy nuclear physics

    International Nuclear Information System (INIS)

    1989-01-01

    This report summarizes work in experimental Intermediate Energy Nuclear Physics carried out between October 1, 1988 and October 1, 1989 at the Nuclear Physics Laboratory of the University of Colorado, Boulder, under grant DE-FG02-86ER-40269 with the United States Department of Energy. The experimental program is very broadly based, including pion-nucleon studies at TRIUMF, inelastic pion scattering and charge exchange reactions at LAMPF, and nucleon charge exchange at LAMPF/WNR. In addition, a number of other topics related to accelerator physics are described in this report

  2. Intermediate energy nuclear fission

    International Nuclear Information System (INIS)

    Hylten, G.

    1982-01-01

    Nuclear fission has been investigated with the double-kinetic-energy method using silicon surface barrier detectors. Fragment energy correlation measurements have been made for U, Th and Bi with bremsstrahlung of 600 MeV maximum energy. Distributions of kinetic energy as a function of fragment mass are presented. The results are compared with earlier photofission data and in the case of bismuth, with calculations based on the liquid drop model. The binary fission process in U, Yb, Tb, Ce, La, Sb, Ag and Y induced by 600 MeV protons has been investigated yielding fission cross sections, fragment kinetic energies, angular correlations and mass distributions. Fission-spallation competition calculations are used to deduce values of macroscopic fission barrier heights and nuclear level density parameter values at deformations corresponding to the saddle point shapes. We find macroscopic fission barriers lower than those predicted by macroscopic theories. No indication is found of the Businaro Gallone limit expected to occur somewhere in the mass range A = 100 to A = 140. For Ce and La asymmetric mass distributions similar to those in the actinide region are found. A method is described for the analysis of angular correlations between complementary fission products. The description is mainly concerned with fission induced by medium-energy protons but is applicable also to other projectiles and energies. It is shown that the momentum and excitation energy distributions of cascade residuals leading to fission can be extracted. (Author)

  3. Nuclear structure at intermediate energies

    International Nuclear Information System (INIS)

    Bonner, B.E.; Mutchler, G.S.

    1991-01-01

    The theme that unites the sometimes seemingly disparate experiments undertaken by the Bonner Lab Medium Energy Group is a determination to understand in detail the many facets and manifestations of the strong interaction, that which is now referred to as nonperturbative QCD. Whether we are investigating the question of just what does carry the spin of baryons, or the extent of the validity of the SU(6) wavefunctions for the excited hyperons (as will be measured in their radiative decays in our CEBAF experiment), or questions associated with the formation of a new state of matter predicted by QCD (the subject of our BNL experiments E810, E854, as well as our approved experiment at RHIC), -- all these projects share this common goal. Our other experiments represent different approaches to the same broad undertaking. LAMPF E1097 will provide definitive answers to the question of the spin dependence of the inelastic channel of pion production in the n-p interaction. FNAL E683 may well open a new field of investigation in nuclear physics: that of just how quarks and gluons interact with nuclear matter as they transverse nuclei of different sizes. In most all of the experiments mentioned above, the Bonner Lab Group is playing major leadership roles as well as doing a big fraction of the hard work that such experiments require. We use many of the facilities that are unavailable to the intermediate energy physics community and we use our expertise to design and fabricate the detectors and instrumentation that are required to perform the measurements which we decide to do

  4. Intermediate-energy nuclear chemistry workshop

    Energy Technology Data Exchange (ETDEWEB)

    Butler, G.W.; Giesler, G.C.; Liu, L.C.; Dropesky, B.J.; Knight, J.D.; Lucero, F.; Orth, C.J.

    1981-05-01

    This report contains the proceedings of the LAMPF Intermediate-Energy Nuclear Chemistry Workshop held in Los Alamos, New Mexico, June 23-27, 1980. The first two days of the Workshop were devoted to invited review talks highlighting current experimental and theoretical research activities in intermediate-energy nuclear chemistry and physics. Working panels representing major topic areas carried out indepth appraisals of present research and formulated recommendations for future research directions. The major topic areas were Pion-Nucleus Reactions, Nucleon-Nucleus Reactions and Nuclei Far from Stability, Mesonic Atoms, Exotic Interactions, New Theoretical Approaches, and New Experimental Techniques and New Nuclear Chemistry Facilities.

  5. Intermediate-energy nuclear chemistry workshop

    International Nuclear Information System (INIS)

    Butler, G.W.; Giesler, G.C.; Liu, L.C.; Dropesky, B.J.; Knight, J.D.; Lucero, F.; Orth, C.J.

    1981-05-01

    This report contains the proceedings of the LAMPF Intermediate-Energy Nuclear Chemistry Workshop held in Los Alamos, New Mexico, June 23-27, 1980. The first two days of the Workshop were devoted to invited review talks highlighting current experimental and theoretical research activities in intermediate-energy nuclear chemistry and physics. Working panels representing major topic areas carried out indepth appraisals of present research and formulated recommendations for future research directions. The major topic areas were Pion-Nucleus Reactions, Nucleon-Nucleus Reactions and Nuclei Far from Stability, Mesonic Atoms, Exotic Interactions, New Theoretical Approaches, and New Experimental Techniques and New Nuclear Chemistry Facilities

  6. Nuclear photoreactions at intermediate energies

    International Nuclear Information System (INIS)

    Christillin, P.

    1989-02-01

    We review the interaction of real photons with nuclei up to the GeV region. The common microscopic description of exchange effects below threshold and of the corresponding real photoproduction above, is emphasized. The theoretical problems connected with π photoproduction in Δ region and vector meson photoproduction are spelled out and solved. The gross features of the reaction mechanism are shown to explain both the low energy region, the bulk properties around the Δ resonance as well as the appearance of shadowing only above ρ threshold

  7. [Studies in intermediate energy nuclear physics

    International Nuclear Information System (INIS)

    Peterson, R.J.

    1993-01-01

    This report summarizes work carried out between October 1, 1992 and September 30, 1993 at the Nuclear Physics Laboratory of the University of Colorado, Boulder. The experimental program in intermediate-energy nuclear physics is very broadly based; it includes pion-nucleon and pion-nucleus studies at LAMPF and TRIUMF, kaon-nucleus scattering at the AGS, and equipment development for experiments at the next generation of accelerator facilities

  8. [Intermediate/high energy nuclear physics

    International Nuclear Information System (INIS)

    1989-01-01

    We have continued to develop a theoretical framework for the quark and gluon structure of nuclei. Our approach features a successful phenomenological model, the quark cluster model (QCM), and an ambitious program in the non-perturbative solution of quantum field theories. The effort in quantum field theory provides theoretical results to test or replace assumed ingredients of the QCM. By the explicit example of a scalar field theory in 2D we have solved the long-standing problem of how to treat the dynamics of the vacuum in light-front quantization. We now propose to solve the same problem for simple Fermion field theories in 2D such as the Gross-Neveu model. We propose in subsequent years to address QCD in low dimensionality with the purpose of extracting non-perturbative predictions for quark and gluon amplitudes in few baryon systems. Simultaneously with this new effort we will continue to develop extensions and applications of the QCM. We propose to continue predicting phenomena to be observed in high energy particle-nucleus collisions that reflect the rearrangement of quarks and gluons in nuclei. We have completed our analysis of the SLAC E101 and E133 experiments on Deuterium to elucidate the degree to which a six-quark cluster contribution is admissable in the Bjorken x > 1 data. We have completed our development of a parameterized thermal liquid drop model for light nuclei. In addition we have completed a set of predictions for the formation of a ''nuclear stratosphere'' in nuclei created by intermediate energy heavy ion interactions. These results motivate a new investigation of the temperature dependence of the ion-ion potential with particular emphasis on the thermal dependence of the barrier height and radius. We have also shown that a consistent treatment of relativistic effects is important for a theoretical description of the elastic magnetic form factor of 17 O. 85 refs

  9. Nuclear structure at intermediate energies. Progress report

    International Nuclear Information System (INIS)

    Bonner, B.E.; Mutchler, G.S.

    1992-01-01

    We report here oil the progress that we made for the nine months beginning October 1, 1991 for DOE Grant No. DE-FG05-87ER40309. The report covers the third year of a three year grant. Since we are submitting an accompanying Grant Renewal Proposal, we provide in this report more background information than usual for the different projects. The theme that unites the experiments undertaken by the Bonner Lab Medium Energy Group is a determination to understand in detail the many facets and manifestations of the strong interaction, that which is now referred to as nonperturbative QCD. Whether we are investigating the question of just what does carry the spin of baryons, or the extent of the validity of the SU(6) wavefunctions for the excited hyperons (as will be measured in our CEBAF experiment), or questions associated with the formation of a new state of matter predicted by QCD (the subject of AGS bar p experiment E854, AGS heavy ion experiment E810, as-well as the approved STAR experiment at RHIC), - all these projects share this common goal. FNAL E683 may well open a new field of investigation in nuclear physics: That of just how colored quarks and gluons interact with nuclear matter as they traverse nuclei of different-sizes. In most all of the experiments mentioned, above, the Bonner Lab Group is playing major leadership roles as well as doing a big fraction of the hard work that such experiments require. We use many of the facilities that are available to the intermediate energy physics community and we use our expertise to design and fabricate the detectors and instrumentation that are required to perform the measurements which we decide to do. The format we follow in the Progress Report is,to provide a concise, but fairly complete write-up on each project. The publications listed in Section In give much greater detail on many of the projects. The aim in this report is to focus on the physics goals, the results, and their significance

  10. Intermediate/high energy nuclear physics

    International Nuclear Information System (INIS)

    Vary, J.P.

    1992-01-01

    Progress during the last year is reviewed under the following topics: relativistic hadron--nucleus and nucleus--nucleus collisions (heavy meson production, photon production and fragmentation functions--direct photon production with the QCM and photon fragmentation functions, Cronin efffect and multiple scattering, effective nuclear parton distributions); solving quantum field theories in nonperturbative regime; light-front dynamics and high-spin states (soft form factor of the pion and nucleon for transverse and longitudinal momentum transfers, light front spinors for high-spin objects); high-energy spin physics; relativistic wave equations, quarkonia, and e + e - resonances; associated production of Higgs boson at collider energies, and microscopic nuclear many-body theory and reactions. 135 refs

  11. [Intermediate/high energy nuclear physics

    International Nuclear Information System (INIS)

    1987-01-01

    We have continued to develop a theoretical framework for the quark and gluon structure of nuclei. Our approach features a successful phenomenological model, the quark cluster model (QCM), and an ambitious program in the non-perturbative solution of quantum field theories. We have solved a non-trivial model field theory in the strong coupling regime using a discretized light front quantization (DLFQ) scheme. The method we developed expands upon the method of Pauli and Brodsky by incorporating a dynamical treatment of the vacuum. This is a major result since we have shown directly that the light-cone vacuum is not structureless as has been traditionally claimed by some particle theorists. We have thus succeeded in elucidating the consequences of spontaneous symmetry breaking in light-cone quantization. We now propose to address QCD in low dimensionality with the purpose of extracting non-perturbative predictions for quark and gluon amplitudes in few baryon systems. Simultaneously with this new effort we will continue to develop extensions and applications of the QCM. We propose to continue predicting phenomena to be observed in high energy particle-nucleus collisions that reflect the rearrangement of quarks and gluons in nuclei. We will complete our analysis of the SLAC NE3 data to explicate the degree to which they confirm the QCM prediction of ''steps'' in the ratio of nuclear structure functions when Bjorken x exceeds unity. In another effort, we will perform a search for narrow resonances in electron-positron interactions high in the continuum using the Bethe-Salpeter equation. We have completed our development of microscopic effective Hamiltonians for nuclear structure which include the explicit treatment of delta resonances. These effective Hamiltonians were successfully used in constrained mean field calculations evaluating conditions for nuclei to undergo a transition from nucleon matter to delta matter. 73 refs

  12. Review of recent experiments in intermediate energy nuclear physics

    Energy Technology Data Exchange (ETDEWEB)

    Barnes, P D [Carnegie-Mellon Univ., Pittsburgh, PA (USA)

    1978-01-01

    The data generated at intermediate-energy accelerator facilities has expanded rapidly over the past few years. A number of recent experiments chosen for their impact on nuclear structure questions are reviewed. Proton scattering together with pionic and muonic atom X-ray measurements are shown to be giving very precise determinations of gross nuclear properties. Pion scattering and reaction data although less precise, are starting to generate a new understanding of wave functions of specific nuclear states. Specific examples where new unpublished data are now available are emphasized. In addition, other medium-energy experiments that are starting to contribute to nuclear structure physics are summarized.

  13. Nuclear physics with intermediate energy electrons

    International Nuclear Information System (INIS)

    Moniz, E.J.

    1988-01-01

    Nuclear physics is the study of strongly interacting matter and of the forces which govern its structure and dynamics. The goal of this paper is to give an understanding of nuclei as quantal many-body systems and of the nature of the strong force, ultimately in terms of the presumed underlying theory of quantum chromodynamics. The latter task will require a deeper understanding of hadron structure and of color confinement and, in turn, will provide the basis for exploring the structure of matter under extreme conditions, such as very high density or temperature. This program covers a very broad range of phenomena, theoretical concepts, and experimental tools and is reflected in the diverse degrees of freedom invoked in various contexts. This is indicated where degrees of freedom loosely identified with successively smaller distance scales are indicated. Very importantly, theoretical bridges have been built between the phenomenological descriptions associated with each set of degress of freedom. The mean field, determined self-consistently from the interactions of nucleons in quantum orbits, provides the basis for much of the authors microscopic understanding of nuclear structure and of our characterization of nuclear scattering processes. However, the authors are only beginning to address quantitatively the physics associated with short-range correlations, physics which takes us beyond the mean field description. The nuclear force has a very successful semi-phenomenological description in terms of hadronic degrees of freedom, both mesons and nucleon isobars. More problematic, of course, is our understanding of hadron structure and dynamics in terms of QCD

  14. Theoretical research in intermediate energy nuclear physics: Final report

    International Nuclear Information System (INIS)

    Seki, R.

    1987-01-01

    This paper discusses the progress that has been made on the following problems: a numerical calculation of Skyrmiron scattering; (e,e'p) at high momentum transfer; spin-orbit nucleon-nucleon potential from Skyrme model; pionic atom anomaly; and field theory problems. The problems deal with various topics in intermediate-energy nuclear physics

  15. Nuclear studies with intermediate energy probes

    International Nuclear Information System (INIS)

    Norum, B.E.

    1992-01-01

    Data from measurements at NIKHEF-K of the electro-production of neutral pions from the proton were completely analyzed and axe about to be submitted for publication. These results represent the first precise measurement of this fundamental process in the threshold region. The results are completely consistent with calculations based upon the Low Energy Theorems. Results from studies of a gas jet target in the electron storage ring of the Saskatchewan Accelerator Laboratory (SAL) have been fully analyzed and are being prepared for publication. An Internal Target Development Facility (ITDF), established at NIKHEF-K in a collaborative effort for the purpose of developing higher density gas jet targets suitable for use in electron rings, is operational. Diagnostic techniques are being evaluated in preparation for evaluating jet technology options. Our study of the calcium isotopes ( 42 C and 44 C) is nearing completion. Both the electron and proton scattering data have been completely analyzed. Consistent proton and neutron transition densities have been extracted, and are being compared to corresponding results from pion scattering. Preparations for (γ,π - ) measurements at SAL have been completed, and data taking is about to commence

  16. Transport code and nuclear data in intermediate energy region

    Energy Technology Data Exchange (ETDEWEB)

    Hasegawa, Akira; Odama, Naomitsu [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment; Maekawa, F.; Ueki, K.; Kosaka, K.; Oyama, Y.

    1998-11-01

    We briefly reviewed the problems of intermediate energy nuclear data file and transport codes in connection with processing of the data. This is a summary of our group in the task force on JENDL High Energy File Integral Evaluation (JHEFIE). In this article we stress the necessity of the production of intermediate evaluated nuclear data file up to 3 GeV for the application of accelerator driven transmutation (ADT) system. And also we state the necessity of having our own transport code system to calculate the radiation fields using these evaluated files from the strategic points of view to keep our development of the ADT technology completely free from other conditions outside of our own such as imported codes and data with poor maintenance or unknown accuracy. (author)

  17. Transport code and nuclear data in intermediate energy region

    International Nuclear Information System (INIS)

    Hasegawa, Akira; Odama, Naomitsu; Maekawa, F.; Ueki, K.; Kosaka, K.; Oyama, Y.

    1998-01-01

    We briefly reviewed the problems of intermediate energy nuclear data file and transport codes in connection with processing of the data. This is a summary of our group in the task force on JENDL High Energy File Integral Evaluation (JHEFIE). In this article we stress the necessity of the production of intermediate evaluated nuclear data file up to 3 GeV for the application of accelerator driven transmutation (ADT) system. And also we state the necessity of having our own transport code system to calculate the radiation fields using these evaluated files from the strategic points of view to keep our development of the ADT technology completely free from other conditions outside of our own such as imported codes and data with poor maintenance or unknown accuracy. (author)

  18. ''Super-radiant'' states in intermediate energy nuclear physics

    International Nuclear Information System (INIS)

    Auerbach, N.

    1994-01-01

    A ''super-radiant'' state emerges when, under certain conditions, one or a few ''internal'' states acquire a large collective decay width due to the coupling to one or a few ''external'' decay channels. The rest of the internal states are ''stripped'' of their decay width and become long lived quasistationary states. The essentials of such mechanism and its possible role in intermediate energy nuclear physics are discussed in this work

  19. Theoretical research in intermediate-energy nuclear physics

    International Nuclear Information System (INIS)

    Seki, R.

    1991-01-01

    This report discusses progress that has been made on the following six problems: (1) final state interactions in (e,e'p) at high momentum transfer; (2) a numerical calculation of skyrmion-antiskyrmion annihilation; (3) pion-nucleus interactions above 0.5 GeV/c; (4) pionic atom anomaly; (5) baryon interactions in Skyrme model; and (6) large N c quantum hydrodynamics. The problems deal with various topics in intermediate-energy nuclear physics. Since we plan to continue the investigation of these problems in the third year, we describe the plan of the investigation together

  20. Kaon production in intermediate-energy nuclear collisions

    International Nuclear Information System (INIS)

    Russkikh, V.N.; Ivanov, Yu.B.

    1992-01-01

    Production of positive kaons in nuclear collisions at intermediate energies (∝ 1-2 GeV/nucleon) is studied within the 3-dimensional fluid dynamics combined with the hadrochemical kinetics for strangeness production. Sensitivity of the kaon probe to a form of the nuclear equation of state is analyzed. The model reproduces total and differential cross sections of Ne+NaF→K + +X and Ne+Pb→K + +X reactions at E lab =2.1 GeV/nucleon, provided a soft equation of state is used. The pion-production data are also well described employing the same equation of state. Predictions are made for the current experiment on kaon production at the SIS accelerator. The obtained results are compared with the predictions of other models. (orig.)

  1. Macroscopic/microscopic simulation of nuclear reactions at intermediate energies

    International Nuclear Information System (INIS)

    Lacroix, D.; Van Lauwe, A.; Durand, D.

    2003-01-01

    An event generator, HIPSE (Heavy-Ion Phase-Space Exploration), dedicated to the description of nuclear collisions in the intermediate energy range is presented. The model simulates events for reactions close to the fusion barrier (5-10 MeV/A) up to higher energy (100 MeV/A) and it gives access to the phase-space explored during the collision. The development of HIPSE has been largely influenced by experimental observations. We have separated the reaction into 4 steps: contact, fragment formation, chemical freeze-out, and in-flight deexcitation. HIPSE will be useful for a study of various mechanisms such as neck fragmentation or multi-fragmentation

  2. Nuclear data evaluation at intermediate energies: An introduction

    International Nuclear Information System (INIS)

    Koning, A.J.

    2001-01-01

    An outline is presented of the status of nuclear data evaluation for intermediate energies. Our specific contribution to the field concerns neutron and proton transport data libraries, for energies below about 150 MeV. The evaluated data are calculated and stored in ENDF6-format with the computer codes ECIS96, GNASH and MINGUS. New phenomenological optical model potentials up to 200 MeV are presented and we illustrate the library production with a short outline of the other employed physical methods. The calculated results are compared with the available experimental data. A 68 MeV neutron transmission experiment on iron has been analyzed with MCNPX using the Los Alamos LA150 neutron data library, the ECN/BRC 150 MeV neutron data library and with the intranuclear cascade code LAHET. The clear improvement by using the data libraries is confirmed. (author)

  3. Hipse: an event generator for nuclear collisions at intermediate energies

    International Nuclear Information System (INIS)

    Lacroix, D.; Van Lauwe, A.; Durand, D.

    2003-11-01

    An event generator, HIPSE (Heavy-Ion Phase-Space Exploration), dedicated to the description of nuclear collisions in the intermediate energy range is presented. Based on the sudden approximation and on geometrical hypothesis, it can conveniently simulate heavy-ion interactions at all impact parameters and thus can constitute a valuable tool for the understanding of processes such as neck emission or multifragmentation in peripheral or/and central collisions. After a detailed description of the ingredients of the model, first comparisons with experimental data collected by the INDRA collaboration are shown. Special emphasis is put on the kinematical characteristics of fragments and light particles observed at all impact parameters for Xe+Sn reactions at 25 and 50 MeV/u and Ni + Ni at 82 MeV/u. (authors)

  4. Statistical and dynamical aspects of intermediate energy nuclear collisions

    International Nuclear Information System (INIS)

    Ghetti, R.

    1997-01-01

    Studies of intermediate energy heavy ion reactions have revealed that the probability of emitting n-fragments is reducible to the probability of emitting a single fragment through the binomial distribution. The resulting one-fragment probability shows a dependence on the thermal energy that is characteristic of statistical decay. Similarly, the charge distributions associated with n-fragment emission are reducible to the one-fragment charge distribution, and thermal scaling is observed. The reducibility equation for the n-fragment charge distribution contains a quantity with a value that starts from zero, at low transverse energies, and saturates at high transverse energies. This evolution may signal a transition from a coexistence phase to a vapour phase. In the search for a signal of liquid-gas phase transition, the appearance of intermittency is reconsidered. Percolation calculations, as well as data analysis, indicate that an intermittent-like signal appears from classes of events that do not coincide with the critical one. 232 refs

  5. Statistical and dynamical aspects of intermediate energy nuclear collisions

    Energy Technology Data Exchange (ETDEWEB)

    Ghetti, R.

    1997-01-01

    Studies of intermediate energy heavy ion reactions have revealed that the probability of emitting n-fragments is reducible to the probability of emitting a single fragment through the binomial distribution. The resulting one-fragment probability shows a dependence on the thermal energy that is characteristic of statistical decay. Similarly, the charge distributions associated with n-fragment emission are reducible to the one-fragment charge distribution, and thermal scaling is observed. The reducibility equation for the n-fragment charge distribution contains a quantity with a value that starts from zero, at low transverse energies, and saturates at high transverse energies. This evolution may signal a transition from a coexistence phase to a vapour phase. In the search for a signal of liquid-gas phase transition, the appearance of intermittency is reconsidered. Percolation calculations, as well as data analysis, indicate that an intermittent-like signal appears from classes of events that do not coincide with the critical one. 232 refs.

  6. Proceedings of the Workshop on Program Options in Intermediate-Energy Physics. Keynote address: New directions in intermediate-energy nuclear physics

    International Nuclear Information System (INIS)

    Brown, G.E.

    1980-05-01

    This report presents the keynote address given by G.E. Brown at a LASL colloquium on August 21, 1979, for the Workshop on Program Options in Intermediate-Energy Physics. Professor Brown reviewed major topics of interest in intermediate-energy nuclear physics and suggested experimental approaches that might be most productive in the near future. 22 figures

  7. Formation of large target residues in intermediate energy nuclear collisions

    International Nuclear Information System (INIS)

    Loveland, W.; Aleklett, K.; Sihver, L.; Xu, Z.; Seaborg, G.T.

    1987-04-01

    We have used radiochemical techniques to measure the yields, angular distributions and velocity spectra of the large (A/sub frag/ ≥ 2/3 A/sub tgt/) target residues from the fragmentation of 197 Au by intermediate energy 12 C, 20 Ne, 32 S, 40 Ar, 84 Kr, and 139 La projectiles. The fragment moving frame angular distributions are asymmetric for the lighter projectiles (C-Ar). The fragment velocity spectra are Maxwellian for the Kr induced reactions and non-Maxwellian for the reactions induced by the lighter ions. We interpret these results in terms of a change in the dominant fragment production mechanism(s) from one(s) involving a fast non-equilibrium process for the lighter ions to a slow, equilibrium process for Kr. Comparison of the measured yields and angular distributions with calculations made using a Boltzmann transport equation with appropriate modifications for Pauli blocking, etc., show excellent agreement between data and theory. 12 refs., 12 figs

  8. Final Technical Report - Nuclear Studies with Intermediate Energy Probes

    Energy Technology Data Exchange (ETDEWEB)

    Norum, Blaine [Univ. of Virginia, Charlottesville, VA (United States)

    2017-12-14

    During the almost 20 year period of this grant research was carried out on atomic nuclei and their constituents using both photons and electrons. Research was carried out at the electron accelerator facility of the Netherlands Institute for Nuclear and High Energy Physics (NIKHEFK, Amsterdam) until the electron accelerator facility was closed in 1998. Subsequently, research was carried out at the Laser-Electron Gamma Source (LEGS) of the National Synchrotron Light Source (NSLS) located at the Brookhaven National Laboratory (BNL) until the LEGS was closed at the end of 2006. During the next several years research was carried out at both the Thomas Jefferson National Accelerator Facility (JLAB) and the High Intensity Gamma Source (HIGS) of the Tri-Universities Nuclear Laboratory (TUNL) located on the campus of Duke University. Since approximately 2010 the principal focus was on research at TUNL, although analysis of data from previous research at other facilities continued. The principal early focus of the research was on the role of pions in nuclei. This was studied by studying the production of pions using both photons (at LEGS) and electrons (at NIKHEF-K and JLAB). Measurements of charged pion photoproduction from deuterium at LEGS resulted in the most interesting result of these two decades of work. By measuring the production of a charged pion (p + ) in coincidence with an emitted photon we observed structures in the residual two-nucleon system. These indicated the existence of long-lived states not explicable by standard nuclear theory; they suggest a set of configurations not explicable in terms of a nucleon-nucleon pair. The existence of such “exotic” structures has formed the foundation for most of the work that has ensued.

  9. Different aspects of nuclear physics from low energies up to intermediate energies

    International Nuclear Information System (INIS)

    Lallouet, Y.

    2011-12-01

    This study focuses on different aspects of nuclear physics from low energies to intermediate ones. For the low energies, the nuclear matter is essentially constituted from interacting nucleons. Part I is on the fusion-fission of super-heavy elements, while Part II is on the Skyrme interactions associated sum rules. In the case of the intermediate energies, where the nuclear matter is considered as being an hadronic phase mainly constituted from pions, Part III is focused on nuclear matter relativistic hydrodynamics with spontaneous chiral symmetry breaking. In Part I, the formation and the deexcitation of super-heavy nuclei are being studied. The memory effect must be taken into consideration within the super-heavy nuclei formation dynamics. Therefore we analyzed the formation of compound nuclei including the memory effects. As for the intermediate memory effects some oscillations appear, which is very different from the Markovian dynamics. For super-heavy nuclei deexcitation, the existence of isomeric state within the potential barrier cannot explain the results of experiments performed at GANIL with the crystal blocking technique, and this despite of the fact that it modifies the deexcitation dynamics and increases the fission time. However, this latter study could be useful for the study of the actinides fission. In Part II, the phenomenological Skyrme effective interactions-associated M 1 and M 3 sum rules are being calculated based on their intrinsic definitions. We identify then M 1 up to the tensorial level and M 3 with central potential. In Part III, as for the hadronic matter hydrodynamics being applied to heavy ions collisions, and as a first approach only, we can neglect spontaneous chiral symmetry but certainly not the dissipative impact. (author)

  10. On the nuclear fragmentation mechanisms in nuclear collisions at intermediate and high energies

    International Nuclear Information System (INIS)

    Jipa, Al.; Besliu, C.; Felea, D.; Iliescu, B.; Ristea, O.; Ristea, M.; Calin, C.; Horbuniev, A.; Arsene, I.; Esanu, T.; Ochesanu, S.; Caramarcu, C.; Bordeianu, C.; Rosu, I.; Grossu, V.; Zgura, I.S.; Stan, E.; Mitu, C.; Potlog, M.; Cherciu, M.; Stefan, I.

    2004-01-01

    The nuclear fragmentation mechanisms can be discussed taking into account different scales. These scales are related to the fragment sizes. Taking into account the possible different fragmentation mechanisms of the nuclei at the same incident energy an analysis of the experimental results obtained in different experiments performed at the JINR Dubna (Russia), KEK Tsukuba (Japan), GSI Darmstadt (Germany) is done. Results on apparent temperatures, angular distributions, fragment momentum spectra, multiplicities of the intermediate mass fragments are used to analyse the competition between two possible nuclear fragmentation mechanisms, namely: a sudden fragmentation by explosive mechanisms, like shock waves, and a slow fragmentation by the 'fission' of the spectator regions, mainly, because of the interactions with the particles or fragments emitted from the participant region at transverse angles on the incident nucleus, in CMS.Some connections with chaos dynamics and fractal structure of the fragmentation patterns are included. (authors)

  11. Intermediate energy data

    International Nuclear Information System (INIS)

    Koning, A.J.; Fukahori, T.; Hasegawa, A.

    1998-01-01

    Subgroup 13 (SG13) on Intermediate Energy Nuclear data was formed by NEA Nuclear Science Committee to solve common problems of these types of data for nuclear applications. An overview is presented in this final report of the present activities of SG13, including data needs, high-priority nuclear data request list (nuclides), compilation of experimental data, specialists meetings and benchmarks, data formats and data libraries. Some important accomplishments are summarized, and recommendations are presented. (R.P.)

  12. Intermediate-energy nuclear photoabsorption and the pion optical potential

    International Nuclear Information System (INIS)

    Christillin, P.

    1984-01-01

    Nuclear photoabsorption around the pion threshold is schematised as photoproduction of a pion which undergoes final-stae interaction with the nucleus, accounted for by the pion optical potential. It is shown that real pion photoproduction and exchange effects are naturally described by the same mechanism with a non-static pion. The complementarity of photoabsorption to pion physics and its usefulness in gaining new information about pion-nucleus dynamics are stressed. (author)

  13. On the nuclear fragmentation mechanisms in nuclear collisions at intermediate and high energies

    International Nuclear Information System (INIS)

    Jipa, Al; Besliu, C.; Felea, D.

    2004-01-01

    The nuclear fragmentation mechanisms can be discussed by taking into account different scales related to the fragment sizes. Considering two fragmentation mechanisms of the nuclei at the same incident energy an analysis of the experimental results obtained was done. Goldhaber formula was improved by analyzing the discrepancies between data and theories concerning the projectile fragmentation. We implied that the projectile fragmentation process would be governed by the distribution of nucleon momenta in the projectile after the collision occurred. We used in our analysis protons from the 4 He + 7 Li at 4.5 GeV/c per nucleon incident momentum, as well as from 40 Ar + 12 C at 213 AMeV bombarding energy. We proved that in order to proceed in analyzing the projectile fragmentation process at intermediate and high energies one has to consider the dependence σ 0 on the apparent temperature of projectile nucleus after the collision took place. The generalized Bertsch correction for light projectile nuclei and fragments was used and the number of spatial correlations between identical nucleons having anticorrelated momenta was found. Thus we found apparent temperature values close to the separation energies of the considered fragments per number of fragments. The temperatures associated to kinetic energy spectra of the projectile fragments were calculated following two methods. The results from Bauer's method were compared with those obtained by fitting the kinetic energy distributions of the projectile fragments in the rest frame of the projectile with a Maxwellian curve. We also accomplished the comparison of the experimental results with similar events simulated with RQMD 2.4. All the results obtained suggested two nuclear fragmentation mechanisms: a sudden fragmentation by explosive mechanisms, like shock waves and a slow fragmentation by the 'fission' of the spectator regions, mainly because of the interactions with the particles or fragments emitted from the

  14. Theoretical and computational studies in intermediate energy nuclear physics

    International Nuclear Information System (INIS)

    Elster, C.

    1993-08-01

    The research includes applications of many-body scattering theory to nuclear systems and studies of few-body systems described by effective hadronic field theories. Progress was made in bringing all first-order effects into the nonrelativistic elastic nucleon-nucleus scattering in a consistent fashion. This work is directed towards completely and reliably calculating the first-order term in a Watson expansion including a modification through the nulear medium. The research effort in few-body physics was concentrated on nucleon-nucleon (NN) scattering below pion production threshold, where recent measurements indicated that the backward-angle neutron-proton (np) differential cross section may show sensitivity to the size of the pion-nucleon coupling constant

  15. Heavy residue properties in intermediate energy nuclear collisions with gold

    International Nuclear Information System (INIS)

    Aleklett, K.; Sihver, L.; Liljenzin, J.O.; Seaborg, G.T.

    1990-10-01

    We have measured the target fragment production cross sections and angular distributions for the interaction of 32, 44 and 93 MeV/nucleon argon, 35 and 43 MeV/nucleon krypton with gold. The fragment isobaric yield distributions, moving frame angular distributions and velocities have been deduced from these data. This fission cross section decreases with increasing projectile energy and the heavy residue cross section increases. The ratio v parallel /v cn increases approximately linearly with mass removed from the target. 21 refs., 8 figs

  16. The origin of nuclear spin and its effect durning intermediate energy heavy ion collisions

    International Nuclear Information System (INIS)

    Zhang Guoqiang; Cao Xiguang; Fu Yao; Ma Yugang; Cai Xiangzhou; Wang Hongwei; Fang Deqing; Tian Wendong; Chen Jingen; Guo Wei; Liu Guihua

    2010-01-01

    We use the heavy-ion phase-space exploration (HIPSE) model to discuss the origin of the nuclear spin and its effect in Intermediate energy nuclear reaction. It is found that the spin of projectile depends on the impact parameter of the reaction system heavily, while on the violence lightly by contrast. Some interesting multifragmentation phenomena related to the spin are shown, especially those of phase transition. At the same time, the role of excited energy for multifragmentation is also invested. We find the later plays a more robust role durning the nuclear disintegration. (authors)

  17. UCLA Intermediate Energy Nuclear and Particle Physics Research: Final Report

    Energy Technology Data Exchange (ETDEWEB)

    Nefkens, B M.K. [Principal Investigator, ed.; Goetz, J; Lapik, A; Korolija, M; Prakhov, S; Starostin, A [ed.

    2011-05-18

    This project covers the following research: (a) Investigations into the structure of the proton and neutron. This is done by investigating the different resonance states of nucleons with beams of tagged, polarized photons, linearly as well as circularly, incident on polarized hydrogen/deuterium targets and measuring the production of {pi}{sup 0}, 2{pi}{sup }0, 3{pi}{sup 0}, {eta} , {eta}', {omega}, etc. The principal detector is the Crystal Ball multiphoton spectrometer which has an acceptance of nearly 4 . It has been moved to the MAMI accelerator facility of the University of Mainz, Germany. We investigate the conversion of electromagnetic energy into mesonic matter and conversely. (b) We investigate the consequences of applying the "standard" symmetries of isospin, G-parity, charge conjugation, C, P, T, and chirality using rare and forbidden decays of light mesons such as the {eta} ,{eta}' and {omega}. We also investigate the consequences of these symmetries being slightly broken symmetries. We do this by studying selected meson decays using the Crystal Ball detector. (c) We determine the mass, or more precisely the mass difference of the three light quarks (which are inputs to Quantum Chromodynamics) by measuring the decay rate of specially selected {eta} and {eta}' decay modes, again we use the Crystal Ball. (d)We have started a new program to search for the 33 missing cascade baryons using the CLAS detector at the Thomas Jefferson Laboratory. Cascade resonances are very special: they have double strangeness and are quite narrow. This implies that they can be discovered by the missing mass technique in photoproduction reactions such as in {gamma}p{yields}{Xi}{sup}K{sup +}K{sup +}. The cascade program is of particular importance for the upgrade to 12 GeV of the CLAS detector and for design of the Hall D at JLab. (e) Finally, we are getting more involved in a new program to measure the hadronic matter form factor of complex nuclei, in particular

  18. Intercomparison of codes for intermediate energy nuclear data: The first step

    International Nuclear Information System (INIS)

    Blann, M.; Gruppelaar, H.; Nagel, P.; Rodens, J.

    1994-01-01

    Several weak points of the intermediate energy nuclear data calculated in this exercise are described as introduction to some of the areas needing discussion at this meeting. These include nuclear structure effects on precompound spectra, large variations between codes in predicted total reaction cross sections, and in total neutron and proton multiplicities. INC codes don't reflect correct experimental Q values, and may have difficulties at very low angles due to overestimation of the quasi-elastic peak. We raise questions as to additional reaction properties (beyond n and p spectra) which may need benchmarking

  19. Origin of the finite nuclear spin and its effect in intermediate energy heavy ion collisions

    International Nuclear Information System (INIS)

    Zhang Guoqiang; Cao Xiguang; Fu Yao

    2012-01-01

    The heavy-ion phase-space exploration (HIPSE) model is used to discuss the origin of the nuclear spin in intermediate energy heavy-ion collision (HIC). The spin of maximal projectile-like fragment is found to depend strongly on impact parameter of a reaction system,while it relates weakly to the collision violence. Some interesting multi-fragmentation phenomena related to the spin are shown. We also found that the excitation energy in the de-excitation stage plays a robust role at the de-excitation stage in HIC. (authors)

  20. The structure of nuclear states at low, intermediate and high excitation energies

    International Nuclear Information System (INIS)

    Soloviev, V.G.

    1976-01-01

    It is shown that within the model based on the quasiparticle-phonon interaction one can obtain the description of few-quasiparticle components of nuclear states at low, intermediate and high excitation energies. For the low-lying states the energy of each level is calculated. The few-quasiparticle components at intermediate and high excitation energies are represented to be averaged in certain energy intervals and their characteri stics are given as the corresponding strength functions. The fragmentation of single-particle states in deformed nuclei is studied. It is shown that in the distribution of the single-particle strength alongside with a large maximum there appear local maxima and the distribution itself has a long tail. The dependence of neutron strength functions on the excitation energy is investigated for the transfer reaction of the type (d,p) and (d,t). The s,- p,- and d-wave neutron strength functions are calculated at the neutron binding energy Bn. A satisfactory agreement with experiment is obtained. The energies and Elambda-strength functions for giant multipole resonances in deformed nuclei are calculated. The energies of giant quadrupole and octupole resonances are calculated. Their widths and fine structure are being studied. It is stated that to study the structure of highly excited states it is necessary to find the values of many-quasiparticle components of the wave functions. The ways of experimental determination of these components based on the study of γ-transitions between highly excited states are discussed

  1. Explosion-evaporation model for fragment production in intermediate-energy nuclear collisions

    International Nuclear Information System (INIS)

    Fai, G.; Randrup, J.

    1981-01-01

    Nuclear collisions at intermediate energies may create transient systems of hot nuclear matter that decay into many nuclear fragments. The disassembly of such a nuclear fireball is described as a two-stage process. In the primary explosion stage the system quickly fragments into nucleons and composite nuclei according to the available phase space. The explosion produces excited nuclei with half-lives longer than the time associated with the breakup. In the secondary evaporation stage, these nuclei decay, first by sequential emission of light particles (neutrons, protons, alphas), later by electromagnetic radiation. The secondary stage in general changes the relative abundancies of the various fragment species. This general feature makes it essential to take account of the composite fragments before using d/p as a measure of the entropy of the initial source. The formation of unbound nuclei at the explosion stage also has the desirable effect of enhancing the final abundancies of particularly stable nuclei, e.g., 4 He. For neutron-excessive sources the presence of composite nuclei amplifies the ratio of observed neutrons and protons; this effect persists for heavier mirror systems. Predictions of the model are qualitatively compared to available experimental data. The model offers a convenient way to augment existing dynamical models, such as intra-nuclear cascade and nuclear fluid dynamics, to yield actual nuclear fragments rather than merely matter distributions

  2. A Monte Carlo method for nuclear evaporation and fission at intermediate energies

    International Nuclear Information System (INIS)

    Deppman, A.; Likhachev, V.P.; Mesa, J.; Pina, S.R. de; Arruda-Neto, J.D.T.; Goncalves, M.; Rodriguez, O.

    2003-04-01

    We describe a Monte Carlo method to calculate the characteristics of the competition between particle evaporation and nuclear fission processes taking place in the compound nucleus formed after the intranuclear cascade following the absorption of intermediate energy photons by the nucleus. In this version we include not only neutrons, but also protons and alphas as possible evaporating particles. However, this method allows an ease inclusion of other evaporating particles, as deuteron or heavier clusters. Some results for 237 Np, 238 U, and 232 Th are shown. (author)

  3. A Monte Carlo method for nuclear evaporation and fission at intermediate energies

    International Nuclear Information System (INIS)

    Deppman, A.; Tavares, O.A.P.; Duarte, S.B.; Arruda-Neto, J.D.T.; Goncalves, M.; Likhachev, V.P.; Mesa, J.; Oliveira, E.C. de; Pina, S.R. de; Rodriguez, O.

    2003-01-01

    We describe a Monte Carlo method to calculate the characteristics of the competition between particle evaporation and nuclear fission processes taking place in the compound nucleus formed after the intranuclear cascade following the absorption of intermediate energy photons by the nucleus. In this version we include not only neutrons, but also protons and alphas as possible evaporating particles. The present method allows the easy inclusion of other evaporating particles, such as deuteron or heavier clusters. Some fissility results are discussed for the target nuclei 237 Np, 238 U and 232 Th

  4. Intermediate and high energy nuclear reactions at the hadronic structural level

    Energy Technology Data Exchange (ETDEWEB)

    Slowinski, B [Institute of Physics, Warsaw, University of Technology, Poland, Institute of Atomic Energy, Swierk, (Poland)

    1997-12-31

    Form tens of MeV to several hundred of GeV is stretched out quite a large interval of energy when the interaction between hadrons (for instance, pion/nucleon-nucleus and nucleus-nucleus reactions) can be described by the considerably simplified way with still acceptable accuracy. This happens because in this energy region hadrons (i.e. pions, nucleons etc.) remain quasiparticles of nuclear matter mostly without revealing any internal structure, their de Broglie`s wavelength is much shorter as compared to the average intranuclear nucleon`s distance, and the energy transfers in the reaction are, on the average, significantly greater than the binding energy of nucleons inside nuclei. Consequently an approach to the analysis of these phenomena based on simple geometric and probabilistic considerations is justifiable, especially for many practical purposes, in particular, for shielding and dosimetric estimations, material behaviour prediction, as well as for the approximate evaluation of electronuclear breeding effects in different composites of target materials, for nuclear passivation problems and so on. In this work basic physical reasons of such a simplified picture of intermediate and high energy nuclear reactions are presented. The most usual phenomenological models of hadronic multiple emission/production and recent results of the cascade evaporation type models, are also discussed. 2 figs.

  5. (Studies of target fragmentation in intermediate energy, relativistic and ultra-relativistic nuclear collisions)

    Energy Technology Data Exchange (ETDEWEB)

    Loveland, W.D.

    1991-08-01

    The work described herein is part of a project involving the study of low energy (< 10 MeV/A), intermediate energy (10--100 MeV/A) and relativistic (> 250 MeV/A) heavy ion reactions. In the low energy regime, we published a monograph on the properties of the heaviest elements and used that publication as a basis for making a set of best'' semi-empirical predictions of heavy element decay properties. The intermediate energy research effort focussed upon the completion of studies already begun and the initiation of a number of new experiments. In our study of a interaction of 21 MeV/nucleon {sup 129}Xe with {sup 197}Au, we compared the characteristics of the observed deep inelastic phenomena with various models of dissipative reactions and found significant discrepancies between observations and predictions. These discrepancies seemed to be caused by an improper treatment of pre-equilibrium in the early stages of the collision. In our study of the relativistic interaction of 400 MeV/nucleon {sup 12}C with {sup 197}Au, we reported the first direct physical measurement of the properties of the spallation residues from a nucleus-nucleus collision. We found the residue energies to be much lower than those predicted by the intranuclear cascade model, indicating some substantial modifications of that model are needed. But, we also found, indications of significant, non-zero values of the residue transverse momentum, a finding that calls into question the interpretation of a number of radiochemical recoil studies of the kinematics of high energy reactions. A program of performing numerical simulations of intermediate and high energy nuclear collisions using the QMD model was initiated.

  6. γ-rays as a probe to study nuclear dynamics and nuclear structure at intermediate energies

    International Nuclear Information System (INIS)

    Schutz, Y.

    1987-01-01

    The usefulness of gamma rays in nuclear physics is reviewed, and it is shown how they offer insight into the structure and damping of giant resonances, and how they can be used as an isospin filter. Results from inclusive and exclusive experiments at GANIL are discussed. It is stressed that although the production of high energy gamma rays in heavy ion reactions between 30 MeV/A and 86 MeV/A is understood qualitatively, most models fail in being more quantitative

  7. [Studies of target fragmentation in intermediate energy, relativistic and ultra-relativistic nuclear collisions

    International Nuclear Information System (INIS)

    Loveland, W.D.

    1991-08-01

    The work described herein is part of a project involving the study of low energy ( 250 MeV/A) heavy ion reactions. In the low energy regime, we published a monograph on the properties of the heaviest elements and used that publication as a basis for making a set of ''best'' semi-empirical predictions of heavy element decay properties. The intermediate energy research effort focussed upon the completion of studies already begun and the initiation of a number of new experiments. In our study of a interaction of 21 MeV/nucleon 129 Xe with 197 Au, we compared the characteristics of the observed deep inelastic phenomena with various models of dissipative reactions and found significant discrepancies between observations and predictions. These discrepancies seemed to be caused by an improper treatment of pre-equilibrium in the early stages of the collision. In our study of the relativistic interaction of 400 MeV/nucleon 12 C with 197 Au, we reported the first direct physical measurement of the properties of the spallation residues from a nucleus-nucleus collision. We found the residue energies to be much lower than those predicted by the intranuclear cascade model, indicating some substantial modifications of that model are needed. But, we also found, indications of significant, non-zero values of the residue transverse momentum, a finding that calls into question the interpretation of a number of radiochemical recoil studies of the kinematics of high energy reactions. A program of performing numerical simulations of intermediate and high energy nuclear collisions using the QMD model was initiated

  8. Assessment of high temperature nuclear energy storage systems for the production of intermediate and peak-load electric power

    International Nuclear Information System (INIS)

    Fox, E.C.; Fuller, L.C.; Silverman, M.D.

    1977-01-01

    Increased cost of energy, depletion of domestic supplies of oil and natural gas, and dependence on foreign suppliers, have led to an investigation of energy storage as a means to displace the use of oil and gas presently being used to generate intermediate and peak-load electricity. Dedicated nuclear thermal energy storage is investigated as a possible alternative. An evaluation of thermal storage systems is made for several reactor concepts and economic comparisons are presented with conventional storage and peak power producing systems. It is concluded that dedicated nuclear storage has a small but possible useful role in providing intermediate and peak-load electric power

  9. The nuclear spin response to intermediate energy protons and deuterons at low momentum transfer

    International Nuclear Information System (INIS)

    Baker, F.T.; Djalali, C.; Glashausser, C.; Lenske, H.; Love, W.G.; Tomasi-Gustafsson, E.; Wambach, J.

    1997-01-01

    Measurements of polarization transfer in the inelastic scattering of intermediate energy protons and deuterons have yielded a wealth of data on the spin response of nuclei. This work complements the well-known studies of Gamow-Teller strength in charge-exchange reactions. The emphasis here is on a consistent determination of the S=1, T=0 response, practical only with deuterons, and on the proper separation of S=0 and S=1 strength in proton spectra for appropriate comparison with sum rules. We concentrate on two nuclei, 40 Ca and 12 C, at momentum transfers below about 1 fm -1 and on excitations up to about 50 MeV. The continuum second random phase approximation provides the primary theoretical tool for calculating and interpreting the response in terms of properties of the nucleon-nucleon force inside the nuclear medium. The reaction mechanism is described by the DWIA, applied here to continuum proton scattering almost as rigorously as it is usually applied to low energy excitations. A new DWIA formalism for the description of spin observables in deuteron scattering is used. Comparison of the proton and deuteron data with each other and with RPA/DWIA calculations yields interesting insights into the current state of understanding of collectivity and the nuclear spin response. (orig.)

  10. Neutron-proton bremsstrahlung from intermediate energy heavy-ion reactions as a probe of the nuclear symmetry energy?

    International Nuclear Information System (INIS)

    Yong, G.-C.; Li Baoan; Chen Liewen

    2008-01-01

    Hard photons from neutron-proton bremsstrahlung in intermediate energy heavy-ion reactions are examined as a potential probe of the nuclear symmetry energy within a transport model. Effects of the symmetry energy on the yields and spectra of hard photons are found to be generally smaller than those due to the currently existing uncertainties of both the in-medium nucleon-nucleon cross sections and the photon production probability in the elementary process pn→pnγ. Very interestingly, nevertheless, the ratio of hard photon spectra R 1/2 (γ) from two reactions using isotopes of the same element is not only approximately independent of these uncertainties but also quite sensitive to the symmetry energy. For the head-on reactions of 132 Sn + 124 Sn and 112 Sn + 112 Sn at E beam /A=50 MeV, for example, the R 1/2 (γ) displays a rise up to 15% when the symmetry energy is reduced by about 20% at ρ=1.3ρ 0 which is the maximum density reached in these reactions

  11. Nuclear structure at intermediate energies: Progress report, January 1-December 31, 1988

    International Nuclear Information System (INIS)

    Bonner, B.E.; Mutchler, G.S.

    1988-01-01

    This report discusses the progress in the following experiments: Λ Spin Transfer Experiment; Σ 0 Spin Transfer Experiment; Strangeness Production in Heavy Ion Collisions; Measurement of the Imaginary Part of the I=1 /bar N/N S-Wave Scattering Length; Single Pion Production in np Scattering; Measurements of the π + d→Δ ++ n at Intermediate Energy; and PhotoJets from Nuclei

  12. Intermediate-energy nuclear theory. Progress report, July 1, 1977--June 30, 1978

    International Nuclear Information System (INIS)

    Bryan, R.A.

    1978-03-01

    The research reported has centered on the nucleon-nucleon interaction at medium energies, with especial emphasis on the reaction NN → NNπ up to 800 MeV. Elastic NN scattering near the pion production threshold was also investigated, both through phase-shift analysis of data and theoretical interpretation of the intermediate-range force. The quasi-elastic amplitude N anti N → ππ for 4m/sub pi/ 2 less than or equal to t less than or equal to 50m/sub pi/ 2 was studied because of its bearing on the NN problem; a simple but useful model was developed. Finally, work on the pion-photoproduction reaction γN → πΔ was completed, and the close correspondence with the amplitude NN → NNπ exploited. A list of publications is included

  13. The extended sum-rule model view of light and intermediate mass fragment emission in nuclear reactions at intermediate energies

    International Nuclear Information System (INIS)

    Brancus, I.M.; Rebel, H.; Wentz, J.; Corcalciuc, V.

    1989-11-01

    The original sum-rule model worked out by Wilczynski et al. and successfully used for a global description of complete and incomplete fusion reactions has been extended by a term accounting for dissipative processes of the dinuclear system on its way to fusion. When applying to light and heavy ion collisions with various targets at energies in the transitional region, the new term proves to be rather essential for reproducing the element distributions of the fragments emitted from rather asymmetric systems. (orig.) [de

  14. Intermediate Energies for Nuclear Astrophysics and the Development of a Position Sensitive Microstrip Detector System

    Energy Technology Data Exchange (ETDEWEB)

    Sobotka, Lee G. [Washington Univ., St. Louis, MO (United States); Blackmon, J. [Louisiana State Univ., Baton Rouge, LA (United States); Bertulani, C. [Texas A & M Univ., College Station, TX (United States)

    2015-12-30

    The chemical elements are made at astrophysical sites through a sequence of nuclear reactions often involving unstable nuclei. The overarching aim of this project is to construct a system that allows for the inverse process of nucleosynthesis (i.e. breakup of heavier nuclei into lighter ones) to be studied in high efficiency. The specific problem to be overcome with this grant is inadequate dynamic range and (triggering) threshold to detect the products of the breakup which include both heavy ions (with large energy and large deposited energy in a detector system) and protons (with little energy and deposited energy.) Early on in the grant we provided both TAMU and RIKEN (the site of the eventual experiments) with working systems based on the existing technology. This technology could be used with either an external preamplifier that was to be designed and fabricated by our RIKEN collaborators or upgraded by replacing the existing chip with one we designed. The RIKEN external preamplifier project never can to completion but our revised chip was designed, fabricated, used in a test experiment and performs as required.

  15. Theoretical research in intermediate-energy nuclear physics. [Technical progress report, April 1, 1993--March 31, 1994

    International Nuclear Information System (INIS)

    Seki, R.

    1994-01-01

    This paper discusses progress that has been made on the following seven problems: (1) (e, e'p) at high momentum transfer; (2) post,acceleration effects in two-nucleon interferometry of heavy-ion collisions; (3) pion-nucleus interactions above 0.5 GeV; (4) chiral symmetry breaking in nuclei and picnic atom anomaly; (5) atomic screening on nuclear astronomical reactions; (6) QCD related work (coherent pion production from skyrmion-antiskyrmion annihilation, QCD in 1 + 1 dimensions, and correlation functions in the QCD vacuum), and (7) kaonic hydrogen atom experiment. The problems deal with various topics mostly in intermediate-energy nuclear physics. We place priority on (1) and (2), and describe them somewhat in detail below. Other problems are our on-going projects, but we are placing lower priority on them in the second and third year

  16. The role of non-elastic nuclear processes for intermediate-energy protons in silicon targets

    Energy Technology Data Exchange (ETDEWEB)

    Hormaza, Joel Mesa, E-mail: jmesa@ibb.unesp.br [Universidade Estadual Paulista Julio de Mesquita Filho (UNESP), Botucatu, SP (Brazil); Garcia, Cesar E., E-mail: cgarcia@instec.cu [Instituto Superior de Tecnologias y Ciencias Aplicadas (InSTEC), Havana (Cuba); Arruda Neto, Joao D.T.; Rodrigues, Tulio E., E-mail: arruda@if.usp.br, E-mail: tulio@if.usp.br [Universidade de Sao Paulo (USP), Sao Paulo, SP (Brazil). Instituto de Fisica; Schelin, Hugo R.; Denyak, Valery, E-mail: schelin@utfpr.edu.br, E-mail: denyak@gmail.com [Instituto de Pesquisa Pele Pequeno Principe, Curitiba, PR (Brazil); Paschuck, Sergei A.; Evseev, Ivan, E-mail: sergei@utfpr.edu.br, E-mail: evseev@utfpr.edu.br [Universidade Tecnologica Federal do Parana (UTFPR), Curitiba, PR (Brazil)

    2013-07-01

    The transportation of energetic ions in bulk matter is of direct interest in several areas including shielding against ions originating from either space radiations or terrestrial accelerators, cosmic ray propagation studies in galactic medium, or radiobiological effects resulting from the work place or clinical exposures. For carcinogenesis, terrestrial radiation therapy, and radiobiological research, knowledge of beam composition and interactions is necessary to properly evaluate the effects on human and animal tissues. For the proper assessment of radiation exposures both reliable transport codes and accurate input parameters are needed. In the last years efforts have been increasing in order to develop more effective models to describe and predict the damages induced by radiation in electronic devices. In this sense, the interaction of protons with those devices, particularly which operate in space, is a topic of paramount importance, mainly because although the majority of them are made with silicon, experimental data on p+Si nuclear processes is very sparse. In this work we have used a new quite sophisticated Monte Carlo multicollisional intranuclear cascade (MCMC) code for pre-equilibrium emission, plus de-excitation of residual nucleus by two ways: evaporation of particles (mainly nucleons, but also composites) and possibly fragmentation/fission in the case of heavy residues, in order to study some observable of nuclear interaction of protons between 100-200 MeV in a {sup 28}Si target. The code has been developed with very recent improvements that take into account Pauli blocking effects in a novel and more precise way, as well as a more rigorous energy balance, an energy stopping time criterion for pre-equilibrium emission and the inclusion of deuteron, triton and 3He emissions in the evaporation step, which eventually concurs with fragmentation/break-up stage. The fragment mass distributions, as well as the multiplicities and the spectra of secondary

  17. The role of non-elastic nuclear processes for intermediate-energy protons in silicon targets

    International Nuclear Information System (INIS)

    Hormaza, Joel Mesa; Garcia, Cesar E.; Arruda Neto, Joao D.T.; Rodrigues, Tulio E.; Paschuck, Sergei A.; Evseev, Ivan

    2013-01-01

    The transportation of energetic ions in bulk matter is of direct interest in several areas including shielding against ions originating from either space radiations or terrestrial accelerators, cosmic ray propagation studies in galactic medium, or radiobiological effects resulting from the work place or clinical exposures. For carcinogenesis, terrestrial radiation therapy, and radiobiological research, knowledge of beam composition and interactions is necessary to properly evaluate the effects on human and animal tissues. For the proper assessment of radiation exposures both reliable transport codes and accurate input parameters are needed. In the last years efforts have been increasing in order to develop more effective models to describe and predict the damages induced by radiation in electronic devices. In this sense, the interaction of protons with those devices, particularly which operate in space, is a topic of paramount importance, mainly because although the majority of them are made with silicon, experimental data on p+Si nuclear processes is very sparse. In this work we have used a new quite sophisticated Monte Carlo multicollisional intranuclear cascade (MCMC) code for pre-equilibrium emission, plus de-excitation of residual nucleus by two ways: evaporation of particles (mainly nucleons, but also composites) and possibly fragmentation/fission in the case of heavy residues, in order to study some observable of nuclear interaction of protons between 100-200 MeV in a 28 Si target. The code has been developed with very recent improvements that take into account Pauli blocking effects in a novel and more precise way, as well as a more rigorous energy balance, an energy stopping time criterion for pre-equilibrium emission and the inclusion of deuteron, triton and 3He emissions in the evaporation step, which eventually concurs with fragmentation/break-up stage. The fragment mass distributions, as well as the multiplicities and the spectra of secondary particles

  18. Nuclear structure studies at intermediate energies: Interim progress report, August 1987 through August 1988

    International Nuclear Information System (INIS)

    Hintz, N.M.

    1988-08-01

    This report contains papers on nuclear structure studies. The topics of some of the papers discussed in this report are: recoil free Δ production; low lying magnetic states; Coulomb-nuclear polarimeter; comparison of Dirac and non relativistic IA; measurements of A/sub LL/ in /rvec p//rvec p/ elastic; π + 208 Pb; /sup 206,207,208/Pb density differences; search for dibaryon resonances; and effective mass corrections to p + X

  19. [Studies of target fragmentation in intermediate energy, relativistic and ultra-relativistic nuclear collisions]. Nuclear chemistry progress report, August 1, 1990--August 1, 1991

    Energy Technology Data Exchange (ETDEWEB)

    Loveland, W.D.

    1991-08-01

    The work described herein is part of a project involving the study of low energy (< 10 MeV/A), intermediate energy (10--100 MeV/A) and relativistic (> 250 MeV/A) heavy ion reactions. In the low energy regime, we published a monograph on the properties of the heaviest elements and used that publication as a basis for making a set of ``best`` semi-empirical predictions of heavy element decay properties. The intermediate energy research effort focussed upon the completion of studies already begun and the initiation of a number of new experiments. In our study of a interaction of 21 MeV/nucleon {sup 129}Xe with {sup 197}Au, we compared the characteristics of the observed deep inelastic phenomena with various models of dissipative reactions and found significant discrepancies between observations and predictions. These discrepancies seemed to be caused by an improper treatment of pre-equilibrium in the early stages of the collision. In our study of the relativistic interaction of 400 MeV/nucleon {sup 12}C with {sup 197}Au, we reported the first direct physical measurement of the properties of the spallation residues from a nucleus-nucleus collision. We found the residue energies to be much lower than those predicted by the intranuclear cascade model, indicating some substantial modifications of that model are needed. But, we also found, indications of significant, non-zero values of the residue transverse momentum, a finding that calls into question the interpretation of a number of radiochemical recoil studies of the kinematics of high energy reactions. A program of performing numerical simulations of intermediate and high energy nuclear collisions using the QMD model was initiated.

  20. Experiments in intermediate energy physics

    International Nuclear Information System (INIS)

    Dehnhard, D.

    2003-01-01

    Research in experimental nuclear physics was done from 1979 to 2002 primarily at intermediate energy facilities that provide pion, proton, and kaon beams. Particularly successful has been the work at the Los Alamos Meson Physics Facility (LAMPF) on unraveling the neutron and proton contributions to nuclear ground state and transition densities. This work was done on a wide variety of nuclei and with great detail on the carbon, oxygen, and helium isotopes. Some of the investigations involved the use of polarized targets which allowed the extraction of information on the spin-dependent part of the triangle-nucleon interaction. At the Indiana University Cyclotron Facility (IUCF) we studied proton-induced charge exchange reactions with results of importance to astrophysics and the nuclear few-body problem. During the first few years, the analysis of heavy-ion nucleus scattering data that had been taken prior to 1979 was completed. During the last few years we created hypernuclei by use of a kaon beam at Brookhaven National Laboratory (BNL) and an electron beam at Jefferson Laboratory (JLab). The data taken at BNL for a study of the non-mesonic weak decay of the A particle in a nucleus are still under analysis by our collaborators. The work at JLab resulted in the best resolution hypernuclear spectra measured thus far with magnetic spectrometers

  1. Experiments in intermediate energy physics

    Energy Technology Data Exchange (ETDEWEB)

    Dehnhard, D.

    2003-02-28

    Research in experimental nuclear physics was done from 1979 to 2002 primarily at intermediate energy facilities that provide pion, proton, and kaon beams. Particularly successful has been the work at the Los Alamos Meson Physics Facility (LAMPF) on unraveling the neutron and proton contributions to nuclear ground state and transition densities. This work was done on a wide variety of nuclei and with great detail on the carbon, oxygen, and helium isotopes. Some of the investigations involved the use of polarized targets which allowed the extraction of information on the spin-dependent part of the triangle-nucleon interaction. At the Indiana University Cyclotron Facility (IUCF) we studied proton-induced charge exchange reactions with results of importance to astrophysics and the nuclear few-body problem. During the first few years, the analysis of heavy-ion nucleus scattering data that had been taken prior to 1979 was completed. During the last few years we created hypernuclei by use of a kaon beam at Brookhaven National Laboratory (BNL) and an electron beam at Jefferson Laboratory (JLab). The data taken at BNL for a study of the non-mesonic weak decay of the A particle in a nucleus are still under analysis by our collaborators. The work at JLab resulted in the best resolution hypernuclear spectra measured thus far with magnetic spectrometers.

  2. Nuclear structure at intermediate energies: Progress report, November 1986-August 1987

    International Nuclear Information System (INIS)

    Bonner, B.E.; Mutchler, G.S.; Phillips, G.C.

    1987-01-01

    The report includes information on prior, current, and future experiments; nuclear theory; and instrumentation. Current experiments include single pion production in np scattering, spin transfer in hyperon production, photoproduction of high p/sub T/jets, and meson studies. Future experiments will continue current research and also include the production of lambda particles with heavy ions and the production of polarized antiproton beams at LEAR. Theoretical research programs are investigating the Gaussian effective potential (GEP), hadron-nucleus scattering as a function of nuclear size, nucleon structure, and exotic contributions to lambda production in pion-deuteron interactions. Instrumentation developments include proportional wire counters, other electronics, and computer systems. 13 refs., 1 tab

  3. Intermediate energy nuclear physics at the MIT-Bates linear accelerator Center

    International Nuclear Information System (INIS)

    Alarcon, R.

    2001-01-01

    The MlT-Bates linear accelerator center is a University-based laboratory carrying out frontier research in electromagnetic nuclear physics. The research program is focussed on the flavor structure, charge distribution, shape, size and polarizability of the nucleon; the spin and electromagnetic structure of light nuclei; and the origin of the elements. The Bates research program has three central thrusts: the SAMPLE experiments to probe the flavor structure of the proton using parity-violating electron scattering at back angles; the OOPS (out-of-plane spectrometer system) program which uses out-of-plane detection to probe nucleon and few-body nuclear structure; and the BLAST (Bates large acceptance spectrometer toroid) program which will use a new spectrometer under construction to measure electron scattering from internal gas targets in the south hall ring. (Author)

  4. Intermediate-energy nuclear theory. Final report, July 1, 1976-August 31, 1984

    International Nuclear Information System (INIS)

    Bryan, R.A.

    1985-02-01

    We summarize the research accomplishments of the Texas A and M Medium-Energy Theory Group which was funded by the Department of Energy from July 1976 through August 1984. Our research was mainly in the area of nucleon-nucleon and NNπ theory and data analysis, although some effort was also devoted to the elementary-particle aspects of these hadrons in order to better understand the NN force. Publications and reports are listed

  5. Study of nuclear reactions involving heavy nuclei and intermediate- and high-energy protons and an application in nuclear reactor physics (ADS)

    International Nuclear Information System (INIS)

    Matuoka, Paula Fernanda Toledo

    2016-01-01

    In the present work, intermediate- and high-energy nuclear reactions involving heavy nuclei and protons were studied with the Monte Carlo CRISP (Rio - Ilheus - Sao Paulo Collaboration) model. The most relevant nuclear processes studied were intranuclear cascade and fission-evaporation competition. Preliminary studies showed fair agreement between CRISP model calculation and experimental data of multiplicity of evaporated neutrons (E 20 MeV) were emitted mostly in the intranuclear cascade stage, while evaporation presented larger neutron multiplicity. Fission cross section of 209 mb and spallation cross section of 1788 mb were calculated { both in agreement with experimental data. The fission process resulted in a symmetric mass distribution. Another Monte Carlo code, MCNP, was used for radiation transport in order to understand the role of a spallation neutron source in a ADS (Accelerator Driven System) nuclear reactor. Initially, a PWR reactor was simulated to study the isotopic compositions in spent nuclear fuel. As a rst attempt, a spallation neutron source was adapted to an industrial size nuclear reactor. The results showed no evidence of incineration of transuranic elements and modifications were suggested. (author)

  6. The azimuthally anisotropic emission of unstable light nuclear in the heavy ion collisions at intermediate energy

    International Nuclear Information System (INIS)

    He Zhiyong; Jin Genming; Li Zuyu; Duan Limin; Dai Guangxi; Zhang Baoguo; Wu Heyu; Wen Wanxin; Qi Yujin; Luo Qingzheng

    1996-01-01

    The unstable light nuclei emitted in the interaction of 40 Ar on 197 Au have been detected at energy of 25 MeV/u by using particle-particle correlation measurement at small relative angle. Their in-plane and out-of-plane emission were measured for three bins of experimentally estimated impact parameter. The enhanced in-plane emission for mid-rapidity unstable nuclei is observed. This enhanced in-plane emission becomes stronger with increasing of impact parameter, but changes small with the mass of unstable nuclei. The in-plane enhancement decreases slightly with the energy of excited state of unstable nuclei. For projectile-like unstable nuclei, the in-plane emission dominates as expected

  7. Charge Dependence and Electric Quadrupole Effects on Single-Nucleon Removal in Relativistic and Intermediate Energy Nuclear Collisions

    Science.gov (United States)

    Norbury, John W.

    1992-01-01

    Single nucleon removal in relativistic and intermediate energy nucleus-nucleus collisions is studied using a generalization of Weizsacker-Williams theory that treats each electromagnetic multipole separately. Calculations are presented for electric dipole and quadrupole excitations and incorporate a realistic minimum impact parameter, Coulomb recoil corrections, and the uncertainties in the input photonuclear data. Discrepancies are discussed. The maximum quadrupole effect to be observed in future experiments is estimated and also an analysis of the charge dependence of the electromagnetic cross sections down to energies as low as 100 MeV/nucleon is made.

  8. Nuclear energy

    International Nuclear Information System (INIS)

    Kuhn, W.

    1986-01-01

    This loose-leaf collection is made up of five didactically prepared units covering the following subjects: basic knowledge on nuclear energy, nuclear energy in relation to energy economy, site issues, environmental compatibility of nuclear energy, and nuclear energy in the focus of political and social action. To this was added a comprehensive collection of material: specific scientific background material, a multitude of tables, diagrams, charts etc. for copying, as well as 44 transparent charts, mostly in four colours. (orig./HP) [de

  9. Development of the process of energy transfer from a nuclear Power Plant to an intermediate temperature electrolyse; Desarrollo del proceso de transferencia de energia desde una central nuclear a un electrolizador de temperatura intermedia

    Energy Technology Data Exchange (ETDEWEB)

    Munoz Cervantes, A.; Cuadrado Garcia, P.; Soraino Garcia, J.

    2013-07-01

    Fifty million tons of hydrogen are consumed annually in the world in various industrial processes. Among them, the ammonia production, oil refining and the production of methanol. One of the methods to produce it is the electrolysis of water, oxygen and hydrogen. This process needs electricity and steam which a central nuclear It can be your source; Hence the importance of developing the transfer process energy between the two. The objective of the study is to characterize the process of thermal energy transfer from a nuclear power plant to an electrolyzer of intermediate temperature (ITSE) already defined. The study is limited to the intermediate engineering process, from the central to the cell.

  10. Far from the intermediate nuclear field

    International Nuclear Information System (INIS)

    Dietrich, K.; Wagner, G.J.; Gregoire, C.; Campi, X.; Silvestre-Brac, B.; Platchkov, S.; Mayer, B.; Abgrall, Y.; Bohigas, O.; Grange, P.; Signarbieux, C.

    1988-01-01

    Pairing correlations in nuclear physics; the BCS state and quasi-particles; the layer model; collision effects on nuclear dynamics; the theory of cluster formation (application to nucleus fragmentation); short range correlations (few-particle systems); deuterium electron scattering; dibaryonic resonances; traditional and exotic hadron probes of nuclear structure; spectral fluctuations and chaotic motion; corrections to the intermediate nuclear field (nonrelativistic and other effects); and heavy nuclei splitting and nuclear superfluidity are introduced [fr

  11. UCLA intermediate energy nuclear physics and relativistic heavy ion physics. Annual report, February 1, 1983-January 31, 1984

    International Nuclear Information System (INIS)

    1984-01-01

    In this contract year the UCLA Intermediate Energy Group has continued to pursue a general set of problems in intermediate energy physics using new research tools and theoretical insights. Our program to study N-N scattering and proton-light nucleus scattering has been enhanced by a new polarized target facility (both hydrogen and deuterium) at the High Resolution Spectrometer (HRS) of the Los Alamos Meson Physics Facility (LAMPF). This facility has been constructed by our group in collaboration with physicists from KEK, LAMPF and the University of Minnesota; and the first set of experiments studying polarized beam-polarized target scattering at the HRS were completed this summer and early fall. The HRS mode of operation has led to some unique design features which are described. At the Bevalac, a new beam line spectrometer will be constructed for us during this year and next to significantly enhance our capability to study subthreshold k + , k - and anti p production in relativistic heavy ion collisions and to search for fractionally charged particles. During this period a proposal is being prepared for a very large acceptance spectrometer and its associated beam line which will be used to detect dilepton pairs produced in relativistic heavy ion collisions. In concert with these experimental projects, theoretical advances in the understanding of new data from the HRS, particularly spin transfer data, have been made by the UCLA group and are described

  12. Intermediate Energy Activation File (IEAF-99)

    International Nuclear Information System (INIS)

    Korovin, Yu.; Konobeev, A.; Pereslavtsev, P.; Stankovskij, A.; Fischer, U.; Moellendorff, U. von

    1999-01-01

    Nuclear data library IEAF-99, elaborated to study processes of interactions of intermediate energy neutrons with materials in accelerator driven systems, is described. The library is intended for activation and transmutation studies for materials irradiated by neutrons. IEAF-99 contains evaluated neutron induced reaction cross sections at the energies 0-150 MeV for 665 stable and unstable nuclei from C to Po. Approximately 50,000 excitation functions are included in the library. The IEAF-99 data are written in the ENDF-6 format combining MF = 3,6 MT = 5 data recording. (author)

  13. Improved calculations of the electronic and nuclear energy losses for light ions penetrating H and He targets at intermediate velocities

    Energy Technology Data Exchange (ETDEWEB)

    Grande, P.L. [Rio Grande do Sul Univ., Porto Alegre, RS (Brazil). Inst. de Fisica; Schiwietz, G. [Hahn-Meitner-Institut Berlin GmbH (Germany). Dept. FD

    1994-06-01

    A review is given on the use of the coupled-channel method to calculate the electronic and nuclear energy loss of ions penetrating the matter. This first principle calculation based on an expansion of the time dependent electronic wavefunction in terms of atomic orbitals has been applied to evaluate the impact parameter dependence of the electronic energy loss, the stopping cross-section and the fluctuation is energy loss of ions colliding with H and He atoms at energies of 10 keV/amu to 500 keV/amu. The results have been compared to experimental data as well as to others existing models, local density approximation in an electron gas target, harmonic oscillator target treatment and first order plane-wave-Born approximation. (author). 63 refs, 11 figs.

  14. Photonuclear reactions at intermediate energy

    International Nuclear Information System (INIS)

    Koch, J.H.

    1982-01-01

    The dominant feature of photonuclear reactions at intermediate energies is the excitation of the δ resonance and one can therefore use such reactions to study the dynamics of δ propagation in a nucleus. Following an introductory section the author comments on photoabsorption on a single nucleon in Section II. A review of the δ-n Greens function and of the photonuclear amplitude is given in Section III. Results for photoabsorption on 4 He are shown in Section IV and compared with the data. Coherent π 0 photoproduction is discussed in Section V and calculations for 12 C are compared to recent measurements. (Auth.)

  15. Intermediate energy nuclear physics (Task C) and charge exchange reactions (Task W). Technical progress report, October 1, 1985-October 1, 1986

    International Nuclear Information System (INIS)

    Kraushaar, J.J.

    1986-10-01

    This report describes the experimental work in intermediate energy research carried out over the past year at the University of Colorado. The experimental program is very broad in nature, ranging from investigations in pion-nucleus interactions, nucleon charge exchange, inelastic electron scattering, and nucleon transfer reactions. The experiments were largely carried out at the Los Alamos Meson Physics Facility, but important programs were conducted at the Tri-University Meson Facility at the University of British Columbia, the Indiana University Cyclotron Facility and Netherlands Institute for Nuclear Physics Research (NIKHEF-K)

  16. Proceedings of the 6. National Meeting on Intermediate Energy Physics

    International Nuclear Information System (INIS)

    1986-01-01

    Several works on nuclear, hadron and quark physics are presented covering both aspects; theoretical and experimental, are presented. Emphasis is given in the intermediate energy region, several MeV centil few GeV. (L.C.) [pt

  17. Nuclear energy

    International Nuclear Information System (INIS)

    Wethe, Per Ivar

    2009-01-01

    Today we know two forms of nuclear energy: fission and fusion. Fission is the decomposition of heavy nuclei, while fusion is the melting together of light nuclei. Both processes create a large surplus of energy. Technologically, we can currently only use fission to produce energy in today's nuclear power plants, but there is intense research worldwide in order to realize a controlled fusion process. In a practical context, today's nuclear energy is a sustained source of energy since the resource base is virtually unlimited. When fusion technology is realized, the resource supply will be a marginal problem. (AG)

  18. Multifragmentation in intermediate energy heavy ion collisions

    International Nuclear Information System (INIS)

    Jacak, B.V.; Britt, H.C.; Claesson, G.

    1986-01-01

    There has been considerable recent interest in the production of intermediate mass fragments (A > 4) in intermediate and high energy nucleus-nucleus collisions. The mechanism for production of these fragments is not well understood and has been described by models employing a variety of assumptions. Some examples are: disassembly of a system in thermal equilibrium into nucleons and nuclear fragments, liquid-vapor phase transitions in nuclear matter, final state coalescence of nucleons and dynamical correlations between nucleons at breakup. Previous studies of fragment production, with one exception, have been single particle inclusive measurements; the observed fragment mass (or charge) distributions can be described by all of the models above. To gain insight into the fragment production mechanism, the authors used the GSI/LBL Plastic Ball detector system to get full azimuthal coverage for intermediate mass fragments in the forward hemisphere in the center of mass system while measuring all the light particles in each event. The authors studied the systems 200 MeV/nucleon Au + Au and Au + Fe

  19. Proton scattering at intermediate energies

    International Nuclear Information System (INIS)

    Chaumeaux, A.; Layly, V.; Schaeffer, R.

    1977-01-01

    This article is devoted to the analysis of the most recent Saclay data of elastic and inelastic proton scattering on nuclei at incident energies around 1GeV ( 16 O, the Ca isotopes, the Ni isotopes, 90 Zr and 208 Pb). Various theories (Impulse or Glauber approximation) are comapred. It is shown that the reaction mechanism is very well understood at 1GeV and that, at these energies, absorption and distortion is small enough, so one can extract nuclear densities from the experiment. In particular, the shape of the neutron densities is given, and compared to the Hartree-Fock predictions. The uncertainties, especially in the determination of the neutron radii are discussed [fr

  20. Electron-atom scattering at intermediate energies

    International Nuclear Information System (INIS)

    Kingston, A.E.; Walters, H.R.J.

    1982-01-01

    The problems of intermediate energy scattering are approached from the low and high energy ends. At low intermediate energies difficulties associated with the use of pseudostates and correlation terms are discussed, special consideration being given to nonphysical pseudoresonances. Perturbation methods appropriate to high intermediate energies are described and attempts to extend these high energy approximations down to low intermediate energies are studied. It is shown how the importance of electron exchange effects develops with decreasing energy. The problem of assessing the 'effective completeness' of pseudostate sets at intermediate energies is mentioned and an instructive analysis of a 2p pseudostate approximation to elastic e - -H scattering is given. It is suggested that at low energies the Pauli Exclusion Principle can act to hide short range defects in pseudostate approximations. (author)

  1. Nuclear energy

    International Nuclear Information System (INIS)

    Hesketh, Ross.

    1985-01-01

    The subject is treated under the headings: nuclear energy -what is it; fusion (principles; practice); fission (principles); reactor types and systems (fast (neutron) reactors as breeders; fast reactors; thermal reactors; graphite-moderated thermal reactors; the CANDU reactor; light water reactors - the BWR and the PWR); the nuclear fuel cycle (waste storage; fuel element manufacture; enrichment processes; uranium mining); safety and risk assessment; the nuclear power industry and the economy (regulating authorities; economics; advantages and disadvantages). (U.K.)

  2. Study of nuclear isovector spin responses from polarization transfer in (p,n) reactions at intermediate energies

    International Nuclear Information System (INIS)

    Wakasa, Tomotsugu

    1997-01-01

    We have measured a complete set of polarization transfer observables has been measured for quasi-free (p vector, n vector) reactions on 2 H, 6 Li, 12 C, 40 Ca, and 208 Pb at a bombarding energy of 346MeV and a laboratory scattering angle of 22deg (q=1.7 fm -1 ). The polarization transfer observables for all five targets are remarkably similar. These polarization observables yield separated spin-longitudinal (σ·q) and spin-transverse (σxq) nuclear responses. These results are compared to the spin-transverse responses measured in deep-inelastic electron scattering as well as to nuclear responses based on the random phase approximation. Such a comparison reveals an enhancement in the (p vector, n vector) spin-transverse channel, which masks the effect of pionic correlations in the response ratio. Second, the double differential cross sections at θ lab between 0deg and 12.3deg and the polarization transfer D NN at 0deg for the 90 Zr(p,n) reaction are measured at a bombarding energy of 295MeV. The Gamow-Teller(GT) strength B(GT) in the continuum deduced from the L=0 cross section is compared both with the perturbative calculation by Bertsch and Hamamoto and with the second-order random phase approximation calculation by Drozdz et al. The sum of B(GT) values up to 50MeV excitation becomes S β- =28.0±1.6 after subtracting the contribution of the isovector spin-monopole strength. This S β- value of 28.0±1.6 corresponds to about (93±5)% of the minimum value of the sum-rule 3(N-Z)=30. Last, first measurements of D NN (0deg) for (p vector, n vector) reactions at 295MeV yield large negative values up to 50MeV excitation for the 6 Li, 11 B, 12 C, 13 C(p vector, n vector) reactions. DWIA calculations using the Franey and Love (FL) 270MeV interaction reproduce differential cross sections and D NN (0deg) values, while the FL 325MeV interaction yield D NN (0deg) values less negative than the experimental values. (J.P.N.)

  3. Processing and validation of intermediate energy evaluated data files

    International Nuclear Information System (INIS)

    2000-01-01

    Current accelerator-driven and other intermediate energy technologies require accurate nuclear data to model the performance of the target/blanket assembly, neutron production, activation, heating and damage. In a previous WPEC subgroup, SG13 on intermediate energy nuclear data, various aspects of intermediate energy data, such as nuclear data needs, experiments, model calculations and file formatting issues were investigated and categorized to come to a joint evaluation effort. The successor of SG13, SG14 on the processing and validation of intermediate energy evaluated data files, goes one step further. The nuclear data files that have been created with the aforementioned information need to be processed and validated in order to be applicable in realistic intermediate energy simulations. We emphasize that the work of SG14 excludes the 0-20 MeV data part of the neutron evaluations, which is supposed to be covered elsewhere. This final report contains the following sections: section 2: a survey of the data files above 20 MeV that have been considered for validation in SG14; section 3: a summary of the review of the 150 MeV intermediate energy data files for ENDF/B-VI and, more briefly, the other libraries; section 4: validation of the data library against an integral experiment with MCNPX; section 5: conclusions. (author)

  4. Nuclear energy

    International Nuclear Information System (INIS)

    1996-01-01

    Several issues concerning nuclear energy in France during 1996 are presented: permission of a demand for installing underground laboratories in three sites (Marcoule, Bure and Chapelle-Baton); a report assessing the capacity of Superphenix plant to operate as a research tool; the project of merging between Framatome and Gec-Alsthom companies; the revision of a general report on nuclear energy in France; the issue of military plutonium management

  5. Transfer and breakup reactions at intermediate energies

    International Nuclear Information System (INIS)

    Stokstad, R.G.

    1986-04-01

    The origin of the quasi-elastic peak in peripheral heavy-ion reactions is discussed in terms of inelastic scattering and transfer reactions to unbound states of the primary projectile-like fragment. The situation is analogous to the use of reverse kinematics in fusion reactions, a technique in which the object of study is moving with nearly the beam velocity. It appears that several important features of the quasi-elastic peak may be explained by this approach. Projectile-breakup reactions have attractive features for the study of nuclear structure. They may also be used to determine the partition of excitation energy in peripheral reactions. At intermediate energies, neutron-pickup reactions leading to four-body final states become important. Examples of experiments are presented that illustrate these points. 15 refs., 14 figs

  6. Nuclear energy

    International Nuclear Information System (INIS)

    Hladky, S.

    1985-01-01

    This booklet appeared in a series on technical history. It tries to communicate some of the scientific, technical and social stresses, which have been connected with the application of nuclear energy since its discovery. The individual sections are concerned with the following subjects: the search for the 'smallest particles'; the atomic nucleus; nuclear fission; the 'Manhattan Project'; the time after this - from the euphoria of the 1950's via disillusionment and change of opinion to the state of nuclear energy at the start of the 1980's. The booklet contains many details and is generously illustrated. (HSCH) [de

  7. Nuclear energy

    International Nuclear Information System (INIS)

    Rippon, S.

    1984-01-01

    Do we need nuclear energy. Is it safe. What are the risks. Will it lead to proliferation. The questions are endless, the answers often confused. In the vigorous debates that surround the siting and operation of nuclear power plants, it is all too easy to lose sight of the central issues amid the mass of arguments and counter-arguments put forward. And there remains the doubt, who do we believe. This book presents the facts, simply, straightforwardly, and comprehensibly. It describes the different types of nuclear reactor, how they work, how energy is produced and transformed into usable power, how nuclear waste is handled, what safeguards are built in to prevent accident, contamination and misuse. More important, it does this in the context of the real world, examining the benefits as well as the dangers of a nuclear power programme, quantifying the risks, and providing an authoritative account of the nuclear industry worldwide. Technically complex and politically controversial, the contribution of nuclear energy to our future energy requirements is a crucial topic of our time. (author)

  8. Nuclear energy

    International Nuclear Information System (INIS)

    Seidel, J.

    1990-01-01

    This set of questions is based on an inquiry from the years 1987 to 1989. About 250 people af all age groups - primarily, however, young people between 16 and 25 years of age - were asked to state the questions they considered particularly important on the subject of nuclear energy. The survey was carried out without handicaps according to the brain-storming principle. Although the results cannot claim to be representative, they certainly reflect the areas of interest of many citizens and also their expectations, hopes and fears in connection with nuclear energy. The greater part of the questions were aimed at three topic areas: The security of nuclear power-stations, the effects of radioactivity on people and the problem of waste disposal. The book centres around these sets of questions. The introduction gives a general survey of the significance of nuclear energy as a whole. After this follow questions to do with the function of nuclear power stations, for the problems of security and waste disposal - which are dealt with in the following chapters - are easier to explain and to understand if a few physical and technical basics are understood. In the final section of the book there are questions on the so-called rejection debate and on the possibility of replacing nuclear energy with other energy forms. (orig./HP) [de

  9. Nuclear energy

    International Nuclear Information System (INIS)

    Panait, A.

    1994-01-01

    This is a general report presenting the section VII entitled Nuclear Power of the National Conference on Energy (CNE '94) held in Neptun, Romania, on 13-16 June 1994. The problems addressed were those relating to electric power produced by nuclear power plant, to heat secondary generation, to quality assurance, to safety, etc. A special attention was paid to the commissioning of the first Romanian nuclear power unit, the Cernavoda-1 reactor of CANDU type. The communications were grouped in four subsections. These were: 1. Quality assurance, nuclear safety, and environmental protection; 2. Nuclear power plant, commissioning, and operation; 3. Nuclear power plant inspection, maintenance, and repairs, heavy water technology; 4. Public opinion education. There were 22 reports, altogether

  10. Nuclear energy

    International Nuclear Information System (INIS)

    Reuss, Paul

    2012-01-01

    With simple and accessible explanations, this book presents the physical principles, the history and industrial developments of nuclear energy. More than 25 years after the Chernobyl accidents and few months only after the Fukushima one, it discusses the pros and cons of this energy source with its assets and its risks. (J.S.)

  11. Intermediate energy proton and light-ion scattering

    International Nuclear Information System (INIS)

    Moss, J.M.

    1981-01-01

    A review is presented of recent (1979-81) developments in the field of intermediate-energy proton and light-ion scattering from nuclei. New theoretical and calculational techniques of particular interest to experimentalists are discussed. Emphasis is placed on topics in nuclear structure physics - giant resonances, pion-condensation precursor phenomena, and polarization transfer (spin-flip) experiments - where intermediate energy proton and light-ion scattering has made new and unique contributions

  12. Intermediate-energy neutron beams from reactors for NCT

    International Nuclear Information System (INIS)

    Brugger, R.M.; Less, T.J.; Passmore, G.G.

    1986-01-01

    This paper discusses ways that a beam of intermediate-energy neutrons might be extracted from a nuclear reactor. The challenge is to suppress the fast-neutron component and the gamma-ray component of the flux while leaving enough of the intermediate-energy neutrons in the beam to be able to perform neutron capture therapy in less than an hour exposure time. Moderators, filters, and reflectors are considered. 11 references, 7 figures, 3 tables

  13. Future possibilities with intermediate-energy neutron beams

    International Nuclear Information System (INIS)

    Brady, F.P.

    1987-01-01

    Future possibilities for using neutrons of intermediate energies (50 - 200 MeV) as a probe of the nucleus are discussed. Some of the recent thinking concerning a systematic approach for studying elastic and inelastic scattering of electrons and hadrons and the important role of medium- and intermediate-energy neutrons in such a programme is reviewed. The advantages of neutrons in this energy range over neutrons with lower energies and over intermediate-energy pions for determining nuclear-transition and ground state densities, and for distinguishing proton from neutron density (isovector sensitivity), are noted. The important role of (n,p) charge exchange reactions in nuclear excitation studies is also reviewed. Experimental methods for utilizing neutrons as probes in elastic, inelastic, and charge exchange studies at these energies are discussed

  14. Theoretical studies of intermediate-energy nuclear physics: Annual technical progress report, April 1, 1988--March 31, 1989

    International Nuclear Information System (INIS)

    Horowitz, C.J.; Macfarlane, M.H.; Serot, B.D.

    1989-01-01

    In this period covered by this report (April 1, 1988 to March 31, 1989), work focused on six main areas: Relativistic Theories of Nuclear Structure and Saturation; Relativistic Descriptions of Proton- Nucleus and Electron-Nucleus Scattering; Nonrelativistic Theory of Nucleon-Nucleus Reactions; Gamow-Teller Excitations in Nuclear Charge- Exchange Reactions; Relativistic Many-Body Theory at Finite Temperature and Density and Relativistic Atomic Physics of High Z Atoms. Results and publications in these areas are summarized in this report

  15. Theoretical studies of intermediate-energy nuclear physics: Annual technical progress report for April 1, 1987 to March 31, 1988

    International Nuclear Information System (INIS)

    Horowitz, C.J.; Macfarlane, M.H.; Serot, B.D.

    1988-01-01

    In the period covered by this report (April 1, 1987 to March 31, 1988), work focused on five main areas: Relativistic Theories of Nuclear Structure and Saturation; Relativistic Descriptions of Proton-Nucleus Scattering; Multipole Sum Rules and Ground-State Correlations; Gamow-Teller Excitations in Nuclear Charge-Exchange Reactions; Relativistic Many-Body Theory at Finite Temperature and Density. Results and publications in these areas are summarized in this report. 32 refs., 1 fig

  16. Nuclear energy

    International Nuclear Information System (INIS)

    Luxo, Armand.

    1977-01-01

    The reasons and conditions of utilizing nuclear power in developing countries are examined jointly with the present status and future uses already evaluated by some organizations. Some consequences are deduced in the human, financial scientific and technological fields, with provisional suggestions for preparing the nuclear industry development in these countries. As a conclusion trends are given to show how the industrialized countries having gained a long scientific and technological experience in nuclear energy can afford their assistance in this field, to developing countries [fr

  17. Energy: nuclear energy

    International Nuclear Information System (INIS)

    Lung, M.

    2000-11-01

    Convinced that the nuclear energy will be the cleaner, safer, more economical and more respectful of the environment energy of the future, the author preconizes to study the way it can be implemented, to continue to improve its production, to understand its virtues and to better inform the public. He develops this opinion in the presentation of the principal characteristics of the nuclear energy: technology, radioactive wastes, radiation protection, the plutonium, the nuclear accidents, the proliferation risks, the economics and nuclear energy and competitiveness, development and sustainability. (A.L.B.)

  18. Study of the nuclear multifragmentation: recent results obtained with the INDRA detector in the intermediate energy domain

    International Nuclear Information System (INIS)

    Saint-Laurent, F.

    1994-01-01

    The new 4π multidetector INDRA, designed for the study of hot nuclear systems decaying by multifragmentation, is available for experiments since the beginning of 1993. First results emphasize its very high detection capabilities. Preliminary results on multiplicity distributions and elemental charge distributions in the most violent collisions for the 36 Ar + 58 Ni and 129 Xe + nat Sn systems are presented. (author) 5 figs., 22 refs

  19. Effects of retarded electrical fields on observables sensitive to the high-density behavior of the nuclear symmetry energy in heavy-ion collisions at intermediate energies

    Science.gov (United States)

    Wei, Gao-Feng; Li, Bao-An; Yong, Gao-Chan; Ou, Li; Cao, Xin-Wei; Liu, Xu-Yang

    2018-03-01

    Within the isospin- and momentum-dependent transport model IBUU11, we examine the relativistic retardation effects of electrical fields on the π-/π+ ratio and neutron-proton differential transverse flow in heavy-ion collisions at intermediate energies. Compared to the static Coulomb fields, the retarded electric fields of fast-moving charges are known to be anisotropic and the associated relativistic corrections can be significant. They are found to increase the number of energetic protons in the participant region at the maximum compression by as much as 25% but that of energetic neutrons by less than 10% in 197Au+197Au reactions at a beam energy of 400 MeV/nucleon. Consequently, more π+ and relatively fewer π- mesons are produced, leading to an appreciable reduction of the π-/π+ ratio compared to calculations with the static Coulomb fields. Also, the neutron-proton differential transverse flow, as another sensitive probe of high-density symmetry energy, is also decreased appreciably due to the stronger retarded electrical fields in directions perpendicular to the velocities of fast-moving charges compared to calculations using the isotropic static electrical fields. Moreover, the retardation effects on these observables are found to be approximately independent of the reaction impact parameter.

  20. Intermediate-energy nuclear physics. Task C. Technical progress report, October 1, 1982-October 1, 1983. Part I

    International Nuclear Information System (INIS)

    1983-01-01

    Progress is reported on the following experimental studies: (1) excitation of giant resonances in 118 Sn in inelastic pion scattering at 130 MeV; (2) giant dipole excitations of 40 Ca by inelastic pion scattering; (3) charge symmetry test using the π + and π - elastic scattering from deuterium at 143 and 256 MeV; (4) binding energy effects on the isospin amplitudes in p-shell nuclei; (5) the energy dependence of the 14 C (π + ,π 0 ) 14 N reaction to the IAS; (6) the ( 3 He,t) reaction at 2 GeV; (7) analyzing power in the (polarized p,n) IAS transitions; (8) the excitation of the 1/2 + (2.36) MeV state in the 24Mg (polarized p,d) reaction from 27 to 150 MeV; (9) the energy dependence of the (polarized p,d) reaction for 54 Fe and 140 Ce; and (10) the energy dependence of the 7 Li(p,d) 6 Li reaction. Publications are listed

  1. Clean energy : nuclear energy world

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-10-15

    This book explains the nuclear engineering to kids with easy way. There are explanations of birth of nuclear energy such as discover of nuclear and application of modern technology of nuclear energy, principles and structure of nuclear power plant, fuel, nuclear waste management, use of radiation for medical treatment, food supplies, industry, utilization of neutron. It indicates the future of nuclear energy as integral nuclear energy and nuclear fusion energy.

  2. Selected problems in experimental intermediate energy physics

    International Nuclear Information System (INIS)

    Mayes, B.W.; Hungerford, E.V.; Pinsky, L.S.

    1990-09-01

    The objectives of this research program are to: investigate forefront problems in experimental intermediate energy physics; educate students in this field of research; and, develop the instrumentation necessary to undertake this experimental program. Generally, the research is designed to search for physical processes which cannot be explained by conventional models of elementary interactions. This includes the use of nuclear targets where the nucleus provides a many body environment of strongly perturbation of a known interaction by this environment. Unfortunately, such effects may be masked by the complexity of the many body problem and may be difficult to observe. Therefore, experiments must be carefully chosen and analyzed for deviations from the more conventional models. There were three major thrusts of the program; strange particle physics, where a strange quark is embedded in the nuclear medium; muon electro-weak decay, which involves a search for a violation of the standard model of the electro-weak interaction; and measurement of the spin dependent structure function of the neutron

  3. Nuclear energy

    International Nuclear Information System (INIS)

    1978-01-01

    2 1/2 years ago a consultation group was formed to help the Section for Social Questions of the Council of Churches in the Netherlands, to answer questions in the area of nuclear energy. During this time the character of the questions has changed considerably. In the beginning people spoke of fear and anxiety over the plans for the application of this new technical development but later this fear and anxiety turned to protest and opposition. This brochure has been produced to enlighten people and try and answer their alarm, by exploring the many facets of the problems. Some of these problems are already being deeply discussed by the public, others play no role in the forming of public opinion. The points of view of the churches over nuclear energy are not expressed, the brochure endeavours to express that nuclear energy problems are a concern for the churches. Technical and economic information and the most important social questions are discussed. (C.F.)

  4. Scattering of intermediate energy protons

    International Nuclear Information System (INIS)

    Chaumeaux, Alain.

    1980-06-01

    The scattering of 1 GeV protons appears to be a powerful means of investigating nuclear matter. We worked with SPESI and the formalism of Kerman-Mc Manus and Thaler. The amplitude of nucleon-nucleon scattering was studied as were the aspects of 1 GeV proton scattering (multiple scattering, absorption, spin-orbit coupling, N-N amplitude, KMT-Glauber comparison, second order effects). The results of proton scattering on 16 O, the isotopes of calcium, 58 Ni, 90 Zr and 208 Pb are given [fr

  5. Proceedings of the 5. National Meeting on Intermediate Energy Physics

    International Nuclear Information System (INIS)

    1984-05-01

    Several papers concerning the physics at intermediate energies (∼ 100-1000MeV) are presented in this proceedings. Almost all the works show overlapping between Nuclear and Particles Physics. There is a predominance in theoretical papers. (L.C.) [pt

  6. Intermediate Energy Nuclear Physics Program

    Energy Technology Data Exchange (ETDEWEB)

    Dunne, James, A.

    2012-06-22

    The originally proposed and funded research activities followed two major areas of study: semileptonic probes of the hadronic neutral current and charm production. The charm production work revolved around the Jefferson Lab experiment E03-008, 'Sub-threshold J/psi Photoprouction', which ran in late 2004. The PI was a co-spokesperson for the experiment. For the three year renewal proposal starting in 2007, the scope and size of the research project changed and increased. In addition to the parity violating studies, the PI had well defined lead roles in a series experiments nucleon spin-structure functions.

  7. Nuclear structure at intermediate energies

    International Nuclear Information System (INIS)

    Bonner, B.E.; Mutchler, G.S.

    1989-01-01

    This paper discusses the following topics: Σdegree C Spin Transfer Experiment; Strangeness Production in Heavy Ion Collisions; Search for a J PC Exotic Hybrid Meson; Antiproton-Nucleus Interactions; Single Pion Production in np Scattering; Two-and Three-Spin Measurements in pp-pp; Proton-Deuteron Elastic Scattering at 800 MeV Two- and Three-Spin Observables; pp Elastic Absolute Cross-Section Measurements; Single Pion Production in np Scattering; Photojets from Nuclei; CCD Development; Computer Acquisition and Computer Software

  8. Intermediate Energy Nuclear Physics Program

    International Nuclear Information System (INIS)

    Dunne, James A.

    2012-01-01

    The originally proposed and funded research activities followed two major areas of study: semileptonic probes of the hadronic neutral current and charm production. The charm production work revolved around the Jefferson Lab experiment E03-008, 'Sub-threshold J/psi Photoprouction', which ran in late 2004. The PI was a co-spokesperson for the experiment. For the three year renewal proposal starting in 2007, the scope and size of the research project changed and increased. In addition to the parity violating studies, the PI had well defined lead roles in a series experiments nucleon spin-structure functions.

  9. Nuclear structure at intermediate energies

    International Nuclear Information System (INIS)

    Bonner, B.E.; Mutchler, G.S.

    1990-01-01

    This paper discusses the following topics: antiproton nucleus interactions; strangeness production in heavy ion collisions; search for a J PC exotic hybrid meson; the SMC experiment; pion production in rvec np scattering; spin transfer measurements for rvec np elastic scattering; pion production in rvec n rvec p scattering; radiative muon capture (RMC) on hydrogen; radiative decays of low-lying hyperons; photoproduction of jets in nuclei; cylindrical multiplicity detector; MWPC detectors and electronics; lead glass array; cylindrical wire chamber; beam calorimeter; shower counter; and muon veto hodoscope

  10. Kinetic advantage of controlled intermediate nuclear fusion

    International Nuclear Information System (INIS)

    Guo Xiaoming

    2012-01-01

    The dominated process of controlled fusion is to let nuclei gain enough kinetic energy to overcome Coulomb barrier. As a result, a fusion scheme can consider two factors in its design: to increase kinetic energy of nuclei and to alter the Coulomb barrier. Cold Fusion and Hot fusion are all one-factor schemes while Intermediate Fusion is a twofactors scheme. This made CINF kinetically superior. Cold Fusion reduces deuteron-deuteron distance, addressing Coulomb barrier, and Hot Fusion heat up plasma into extreme high temperature, addressing kinetic energy. Without enough kinetic energy made Cold Fusion skeptical. Extreme high temperature made Hot Fusion very difficult to engineer. Because CIFN addresses both factors, CIFN is a more promising technique to be industrialized.

  11. I wonder nuclear energy

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Eun Cheol

    2009-04-15

    This book consists seven chapters, which are powerful nuclear energy, principle of nuclear fission, nuclear energy in our daily life, is nuclear energy safe?, what is radiation?, radiation spread in pur daily life and radiation like a spy. It adds nuclear energy story through quiz. This book with pictures is for kids to explain nuclear energy easily.

  12. Scaling of anisotropy flows in intermediate energy heavy ion collisions

    International Nuclear Information System (INIS)

    Ma, Y.G.; Yan, T.Z.; Cai, X.Z.; Chen, J.G.; Fang, D.Q.; Guo, W.; Liu, G.H.; Ma, C.W.; Ma, E.J.; Shen, W.Q.; Shi, Y.; Su, Q.M.; Tian, W.D.; Wang, H.W.; Wang, K.

    2007-01-01

    Anisotropic flows (v 1 , v 2 and v 4 ) of light nuclear clusters are studied by a nucleonic transport model in intermediate energy heavy ion collisions. The number-of-nucleon scalings of the directed flow (v 1 ) and elliptic flow (v 2 ) are demonstrated for light nuclear clusters. Moreover, the ratios of v 4 /v 2 2 of nuclear clusters show a constant value of 1/2 regardless of the transverse momentum. The above phenomena can be understood by the coalescence mechanism in nucleonic level and are worthy to be explored in experiments

  13. Nuclear energy

    International Nuclear Information System (INIS)

    2007-01-01

    This digest document was written by members of the union of associations of ex-members and retired people of the Areva group (UARGA). It gives a comprehensive overview of the nuclear industry world, starting from radioactivity and its applications, and going on with the fuel cycle (front-end, back-end, fuel reprocessing, transports), the nuclear reactors (PWR, BWR, Candu, HTR, generation 4 systems), the effluents from nuclear facilities, the nuclear wastes (processing, disposal), and the management and safety of nuclear activities. (J.S.)

  14. On spallation and fragmentation of heavy ions at intermediate energies

    International Nuclear Information System (INIS)

    Musulmanbekov, G.; Al-Haidary, A.

    2002-01-01

    A new code for simulation of spallation and (multi)fragmentation of nuclei in proton and nucleus induced collisions at intermediate and high energies is developed. The code is a combination of modified intranuclear cascade model with traditional fission - evaporation part and multifragmentation part based on lattice representation of nuclear structure and percolation approach. The production of s-wave resonances and formation time concept included into standard intranuclear cascade code provides correct calculation of excitation energy of residues. This modified cascade code served as a bridge between low and high energy model descriptions of nucleus-nucleus collisions. A good agreement with experiments has been obtained for multiparticle production at intermediate and relatively high energies. Nuclear structure of colliding nuclei is represented as face centered cubic lattice. This representation, being isomorphic to the shell model of nuclear structure, allows to apply percolation approach for nuclear fragmentation. The offered percolation model includes both site and bond percolation. Broken sites represent holes left by nucleons knocked out at cascade state. Therefore, in the first cascade stage mutual rescattering of the colliding nuclei results in knocking some nucleons out of them. After this fast stage paltrily destruct and excited residues remain. On the second stage residual nuclei either evaporate nucleons and light nuclei up to alpha-particles or fragment into pieces with intermediate masses. The choice depends on residue's destruction degree. At low excitation energy and small destruction of the residue the evaporation and fission mechanisms are preferable. The more excitation energy and destruction the more probability of (multi)fragmentation process. Moreover, the more destruction degree of the residual the more the site percolation probability. It is concluded, that at low and intermediate excitation energies the fragmentation of nuclei is slow

  15. Isospin effects in intermediate energy heavy ion collision

    International Nuclear Information System (INIS)

    Liu Jianye; Zuo Wei; Yang Yanfang; Zhao Qiang; Guo Wenjun

    2001-01-01

    Based on the achievements for the intermediate energy heavy ion collision in authors' recent work and the progresses in the world, the isospin effects and the dependence of the entrance channel conditions on them in the intermediate energy heavy ion collisions were introduced, analysed and commended. From the calculation results by using isospin dependence quantum molecular dynamics, it is clear to see that the nuclear stopping power strongly depends on the in-medium isospin dependence nucleon-nucleon cross section and weakly on the symmetry potential in the energy region from about Fermi energy to 150 MeV/u and the intermediate mass fragment multiplicity also sensitively depends on the in-medium isospin dependent nucleon-nucleon cross section and weakly on the symmetry potential in a selected energy region. But the preequilibrium emission neutron-proton ratio is quite contrary, it sensitively depends on the symmetry potential and weakly on the in-medium isospin dependent nucleon-nucleon cross section. In addition to the nuclear stopping sensitively depending on the beam energy, impact parameter and the mass of colliding system and weakly on the neutron-proton ratio of the colliding systems with about the same mass, the preequilibrium emission neutron-neutron ratio sensitively depends on the beam energy and the neutron-proton ratio of colliding system, but weakly on the impact parameter. From above results it is proposed that the nuclear stopping is a new probe to extract the information on the in-medium isospin dependence nucleon-nucleon cross section in energy region from about Fermi energy to 150 MeV/u and the preequilibrium emission neutron-proton ratio is a good probe for extracting the information about the symmetry potential from the lower energy to about 150 MeV/u

  16. Parity violation experiments at intermediate energies

    International Nuclear Information System (INIS)

    Van Oers, W.T.H.

    1996-06-01

    The status of the TRIUMF 221 MeV proton-proton violation experiment is reviewed. Several other proton-proton parity violation experiments in the in the intermediate energy range, currently in various stages of preparation, are discussed. A new experiment at an energy of 5.13 GeV (and if confirmed also at an energy of tens of GeV) is needed to follow on the earlier unexpected large result obtained at 5.13 GeV. (author)

  17. Nuclear energy

    International Nuclear Information System (INIS)

    1978-01-01

    This brochure is intended as a contribution to a better and more general understanding of one of the most urgent problems of present society. Emphasis is laid on three issues that are always raised in the nuclear debate: 1) Fuel cycle, 2) environmental effects of nuclear power plants, 3) waste disposal problems. (GL) [de

  18. Glossary of nuclear energy

    International Nuclear Information System (INIS)

    Seo, Du Hwan

    1987-01-01

    This book gives descriptions of explanations of terminologies concerning to nuclear energy such as analysis of financial safety of nuclear energy, radwaste disposal, fast breeder reactor, nuclear reactor and device, nuclear fuel and technique for concentration, using of nuclear energy radiation and measurement, plan for development of nuclear energy and international institution. This book includes 160 terms on nuclear energy and arranges in Korean alphabetical order.

  19. Nuclear energy and renewable energies

    International Nuclear Information System (INIS)

    1994-01-01

    The nuclear energy and the renewable energies namely: solar energy, wind energy, geothermal energy and biomass are complementary. They are not polluting and they are expected to develop in the future to replace the fossil fuels

  20. Nuclear energy

    International Nuclear Information System (INIS)

    Lotter, A.C.

    1979-01-01

    The recent, terrifying threat of a major calamity at Pennsylvania's Three Mile Island power plant near Harrisburg reverberated across practically the whole of the civilised world. An almost incredible sequence of human and mechanical failures at this installation had stopped just short of disaster and had brought the unthinkable perilously close to happening. The accident had sprayed radioactive waste into the air and had led to the large scale evacuation of people from the endangered area, disrupted hundreds of thousands of lives and caused a crippling setback to the nuclear industry. In this article the author discusses the impact the Harrisburg incident has had on the nuclear industry

  1. Nuclear Energy

    International Nuclear Information System (INIS)

    1982-11-01

    A brief indication is given of the United Kingdom nuclear power programme including descriptions of the fission process, the Magnox, AGR and PWR type reactors, the recycling process, waste management and decommissioning, safety precautions, the prototype fast reactor at Dounreay, and the JET fusion experiment. (U.K.)

  2. Nuclear energy and energy security

    International Nuclear Information System (INIS)

    Mamasakhlisi, J.

    2010-01-01

    Do Georgia needs nuclear energy? Nuclear energy is high technology and application of such technology needs definite level of industry, science and society development. Nuclear energy is not only source of electricity production - application of nuclear energy increases year-by-year for medical, science and industrial use. As an energy source Georgia has priority to extend hydro-power capacity by reasonable use of all available water resources. In parallel regime the application of energy efficiency and energy conservation measures should be considered but currently this is not prioritized by Government. Meanwhile this should be taken into consideration that attempts to reduce energy consumption by increasing energy efficiency would simply raise demand for energy in the economy as a whole. The Nuclear energy application needs routine calculation and investigation. For this reason Government Commission is already established. But it seems in advance that regional nuclear power plant for South-Caucasus region would be much more attractive for future

  3. Nuclear energy. Selective bibliography

    International Nuclear Information System (INIS)

    2011-07-01

    This bibliography gathers articles and books from the French National Library about civil nuclear energy, its related risks, and its perspectives of evolution: general overview (figures, legal framework, actors and markets, policies); what price for nuclear energy (environmental and health risks, financing, non-proliferation policy); future of nuclear energy in energy policies (nuclear energy versus other energies, nuclear phase-out); web sites selection

  4. Dynamical effects in multifragmentation at intermediate energies

    Energy Technology Data Exchange (ETDEWEB)

    Colin, J.; Cussol, D.; Normand, J. [Caen Univ., Lab. de Physique Corpusculaire, IN2P3-CNRS/ENSICAEN, 14 (France)] [and others

    2003-04-01

    The fragmentation of the quasi-projectile is studied with the INDRA multidetector for different colliding systems and incident energies in the Fermi energy range. Different experimental observations show that a large part of the fragmentation is not compatible with the statistical fragmentation of a fully equilibrated nucleus. The study of internal correlations is a powerful tool, especially to evidence entrance channel effects. These effects have to be included in the theoretical descriptions of nuclear multifragmentation. (authors)

  5. Needs for experiment and theory in intermediate energy reactions

    International Nuclear Information System (INIS)

    Blann, M.

    1991-01-01

    We summarize several reasons intermediate energy data are needed in both basic and applied science. The status of the data base at energies up to 2 GeV is cursorily reviewed. Experimental excitation functions, single and double differential cross sections are compared with predictions of the nuclear model code ALICE. The strengths and weaknesses of the code to reproduce data are summarized. Opinions are given as to areas where data are too few or totally lacking, yet are needed for the verification of models and theories. (author). 25 refs, 22 figs

  6. Fission cross section measurements at intermediate energies

    International Nuclear Information System (INIS)

    Laptev, Alexander

    2005-01-01

    The activity in intermediate energy particle induced fission cross-section measurements of Pu, U isotopes, minor actinides and sub-actinides in PNPI of Russia is reviewed. The neutron-induced fission cross-section measurements are under way in the wide energy range of incident neutrons from 0.5 MeV to 200 MeV at the GNEIS facility. In number of experiments at the GNEIS facility, the neutron-induced fission cross sections were obtained for many nuclei. In another group of experiments the proton-induced fission cross-section have been measured for proton energies ranging from 200 to 1000 MeV at 100 MeV intervals using the proton beam of PNPI synchrocyclotron. (author)

  7. Neutrino-nucleus collision at intermediate energy

    International Nuclear Information System (INIS)

    Kosmas, T.S.; Oset, E.

    1999-01-01

    Neutrino-nucleus reactions at low and intermediate energy up to E ν = 500 MeV are studied for the most interesting nuclei from an experimental point of view. We focus on neutrino-nucleus cross-sections of semi-inclusive processes, for which recent measurements from radiochemical experiments at LAMPF and KARMEN laboratories are available. The method employed uses the modified Lindhard function for the description of the particle-hole excitations of the final nucleus via a local density approximation. (authors)

  8. Photofissility of heavy nuclei at intermediate energies

    International Nuclear Information System (INIS)

    Deppman, A.; Arruda Neto, J.D.T.; Likhachev, V.P.; Goncalves, M.

    2002-10-01

    We use the recently developed MCMC/MCEF (Multi Collisional Monte Carlo plus Monte Carlo for Evaporation-Fission calculations) model to calculate the photo fissility and the photofission cross section at intermediate energies for the 243 Am and for 209 Bi, and compare them to results obtained for other actinides and to available experimental data. As expected, the results for 243 Am are close to those for 237 Np. The fissility for pre actinide nuclei is nearly one order of magnitude lower than that for the actinides. Both fissility and photofission cross section for 209 Bi are in good agreement with the experimental data. (author)

  9. Nuclear energy worldwide

    International Nuclear Information System (INIS)

    Fertel, M.

    2000-01-01

    In this short paper the author provides a list of tables and charts concerning the nuclear energy worldwide, the clean air benefits of nuclear energy, the nuclear competitiveness and the public opinion. He shows that the nuclear energy has a vital role to play in satisfying global energy and environmental goals. (A.L.B)

  10. Nuclear energy

    International Nuclear Information System (INIS)

    Anon.

    1994-01-01

    The Administrative Court of Braunschweig judges the Ordinance on Advance Funding of Repositories (EndlagervorausleistungsVO) to be void. The Hannover Regional Court passes a basic judgment concerning the Gorleben salt mine (repository) and an action for damages. The Federal Administrative Court dismisses actions against part-permits for the Hanau fuel element fabrication plant. The Koblenz Higher Administrative Court dismisses actions against a part-permit for the Muelheim-Kaerlich reactor. 31st Amendment of the German Criminal Code passed, involving amendments in environmental criminal code, defined in the 2nd amendment to the Act on Unlowful Practices Causing Damage to the Environment (UKG); here: Amendments to the law relating to the criminal code and penal provisions governing unlawful conduct in the operation of nuclear installations. (orig.) [de

  11. Pion deuteron scattering at intermediate energies

    International Nuclear Information System (INIS)

    Ferreira, E.M.

    1978-09-01

    A comparison is made of results of calculations of πd elastic scattering cross section using multiple scattering and three-body equations, in relation to their ability to reproduce the experimental data at intermediate energies. It is shown that the two methods of theoretical calculation give quite similar curves for the elastic differential cross sections, and that both fail in reproducing backward scattering data above 200MeV. The new accurate experimental data on πd total cross section as a function of the energy are confronted with the theoretical values obtained from the multiple scattering calculation through the optical theorem. Comparison is made between the values of the real part of the forward amplitude evaluated using dispersion relations and using the multiple scattering method [pt

  12. q-Gamow states for intermediate energies

    Energy Technology Data Exchange (ETDEWEB)

    Plastino, A. [La Plata National University and Argentina' s National Research Council, (IFLP-CCT-CONICET)-C. C. 727, 1900 La Plata (Argentina); Rocca, M.C., E-mail: mariocarlosrocca@gmail.com [La Plata National University and Argentina' s National Research Council, (IFLP-CCT-CONICET)-C. C. 727, 1900 La Plata (Argentina); Ferri, G.L. [Fac. de C. Exactas, National University La Pampa, Peru y Uruguay, Santa Rosa, La Pampa (Argentina); Zamora, D.J. [La Plata National University and Argentina' s National Research Council, (IFLP-CCT-CONICET)-C. C. 727, 1900 La Plata (Argentina)

    2016-11-15

    In a recent paper Plastino and Rocca (2016) [18] we have demonstrated the possible existence of Tsallis' q-Gamow states. Now, accelerators' experimental evidence for Tsallis' distributions has been ascertained only at very high energies. Here, instead, we develop a different set of q-Gamow states for which the associated q-Breit–Wigner distribution could easily be found at intermediate energies, for which accelerators are available at many locations. In this context, it should be strongly emphasized Vignat and Plastino (2009) [2] that, empirically, one never exactly and unambiguously “detects” pure Gaussians, but rather q-Gaussians. A prediction is made via Eq. (3.4).

  13. A few aspects of intermediate energy heavy ion reactions

    International Nuclear Information System (INIS)

    Guet, C.

    1982-10-01

    Some aspects of reactions induced by intermediate energy heavy ions, with a special emphasis of 85 MeV/nucleon 12 C data, are discussed and compared to low energy and relativistic energy features. Transition from mean field to independant nucleon picture is advocated by an increase of nuclear transparency illuminated by reaction cross section estimations. Projectile-like fragment distributions, while demonstrating a typical high energy fragmentation behaviour, exhibit low energy regime distortions. Light fragments, associated to large parallel momentum transfer may result from total explosion. Proton emission is investigated and discussed in terms of opposite models such as thermal equilibrium and nucleon-nucleon scattering. First pion production data are well explained by single nucleon-nucleon inelastic scattering

  14. Nuclear energy and nuclear weapons

    International Nuclear Information System (INIS)

    Robertson, J.A.L.

    1983-06-01

    We all want to prevent the use of nuclear weapons. The issue before us is how best to achieve this objective; more specifically, whether the peaceful applications of nuclear energy help or hinder, and to what extent. Many of us in the nuclear industry are working on these applications from a conviction that without peaceful nuclear energy the risk of nuclear war would be appreciably greater. Others, however, hold the opposite view. In discussing the subject, a necessary step in allaying fears is understanding some facts, and indeed facing up to some unpalatable facts. When the facts are assessed, and a balance struck, the conclusion is that peaceful nuclear energy is much more part of the solution to preventing nuclear war than it is part of the problem

  15. Nuclear energy data

    International Nuclear Information System (INIS)

    1990-01-01

    Nuclear Energy Data is the OECD Nuclear Energy Agency's annual compilation of basic statistics on electricity generation and nuclear power in OECD countries. The reader will find quick and easy reference to the present status of and projected trends in total electricity generating capacity, nuclear generating capacity, and actual electricity production as well as on supply and demand for nuclear fuel cycle services [fr

  16. Nuclear energy data 2010

    CERN Document Server

    2010-01-01

    This 2010 edition of Nuclear Energy Data , the OECD Nuclear Energy Agency's annual compilation of official statistics and country reports on nuclear energy, provides key information on plans for new nuclear plant construction, nuclear fuel cycle developments as well as current and projected nuclear generating capacity to 2035 in OECD member countries. This comprehensive overview provides authoritative information for policy makers, experts and other interested stakeholders.

  17. Review of nuclear energy

    International Nuclear Information System (INIS)

    Mattila, L.; Anttila, M.; Pirilae, P.; Vuori, S.

    1997-05-01

    The report is an overview on the production of the nuclear energy all over the world. The amount of production at present and in future, availability of the nuclear fuel, development of nuclear technology, environmental and safety issues, radioactive waste management and commissioning of the plants and also the competitivity of nuclear energy compared with other energy forms are considered. (91 refs.)

  18. Nuclear energy data

    International Nuclear Information System (INIS)

    2002-01-01

    This new edition of Nuclear Energy Data, the OECD Nuclear Energy Agency's annual compilation of essential statistics on nuclear energy in OECD countries, offers additional textual and graphical information as compared with previous editions. It provides the reader with a comprehensive but easy-to-access overview on the status of and trends in the nuclear power and fuel cycle sector. This publication is an authoritative information source of interest to policy makers, experts and academics involved in the nuclear energy field. (authors)

  19. Nuclear energy data

    International Nuclear Information System (INIS)

    2003-01-01

    This new edition of Nuclear Energy Data, the OECD Nuclear Energy Agency's annual compilation of essential statistics on nuclear energy in OECD countries, offers additional textual and graphical information as compared with previous editions. It provides the reader with a comprehensive but easy-to-access overview on the status of and trends in the nuclear power and fuel cycle sector. This publication is an authoritative information source of interest to policy makers, experts and academics involved in the nuclear energy field. (author)

  20. Dynamical and statistical aspects of intermediate energy heavy ion collisions

    International Nuclear Information System (INIS)

    Knoll, J.

    1987-01-01

    The lectures presented deal with three different topics relevant for the discussion of nuclear collisions at medium to high energies. The first lecture concerns a subject of general interest, the description of statistical systems and their dynamics by the concept of missing information. If presents an excellent scope to formulate statistical theories in such a way that they carefully keep track of the known (relevant) information while maximizing the ignorance about the irrelevant, unknown information. The last two lectures deal with quite actual questions of intermediate energy heavy-ion collisions. These are the multi-fragmentation dynamics of highly excited nuclear systems, and the so called subthreshold particle production. All three subjects are self-contained, and can be read without the knowledge about the other ones. (orig.)

  1. Electron scattering from sodium at intermediate energies

    International Nuclear Information System (INIS)

    Mitroy, J.; McCarthy, I.E.

    1986-10-01

    A comprehensive comparison is made between theoretical calculations and experimental data for intermediate energy (≥ 10 eV) electron scattering from sodium vapour. The theoretical predictions of coupled-channels calculations (including one, two or four channels) do not agree with experimental values of the differential cross sections for elastic scattering or the resonant 3s to 3p excitation. Increasingly-more-sophisticated calculations, incorporating electron correlations in the target states, and also including core-excited states in the close-coupling expansion, are done at a few selected energies in an attempt to isolate the cause of the discrepancies between theory and experiment. It is found that these more-sophisticated calculations give essentially the same results as the two- and four-channel calculations using Hartree-Fock wavefunctions. Comparison of the sodium high-energy elastic differential cross sections with those of neon suggests that the sodium differential cross section experiments may suffer from systematic errors. There is also disagreement, at the higher energies, between theoretical values for the scattering parameters and those that are derived from laser-excited superelastic scattering and electron photon coincidence experiments. When allowance is made for the finite acceptance angle of the electron spectrometers used in the experiments by convoluting the theory with a function representing the distribution of electrons entering the electron spectrometer it is found that the magnitudes of the differences between theory and experiment are reduced

  2. Fission in intermediate energy heavy ion reactions

    International Nuclear Information System (INIS)

    Wilhelmy, J.B.; Begemann-Blaich, M.; Blaich, T.; Boissevain, J.; Fowler, M.M.; Gavron, A.; Jacak, B.V.; Lysaght, P.S.; Britt, H.C.; Fields, D.J.; Hansen, L.F.; Lanier, R.G.; Massoletti, D.J.; Namboodiri, M.M.; Remington, B.A.; Sangster, T.C.; Struble, G.L.; Webb, M.L.; Chan, Y.D.; Dacai, A.; Harmon, A.; Leyba, J.; Pouliot, J.; Stokstad, R.G.; Hansen, O.; Levine, M.J.; Thorn, C.E.; Trautmann, W.; Dichter, B.; Kaufman, S.; Videbaek, F.; Fraenkel, Z.; Mamane, G.; Cebra, D.; Westfall, G.D.

    1989-01-01

    A systematic study of reaction mechanisms at intermediate energies (50-100 MeV/A) has been performed at the Lawrence Berkeley Laboratory's BeValac using medium weight projectiles on medium and heavy element targets. A gas and plastic phoswich detector system was employed which gave large geometric coverage and a wide dynamic response. The particles identified with the gas detectors could be characterized into three components - intermediate mass fragments (IMF), fission fragments (FF) and heavy residues (HR). Major observed features are: The reaction yields are similar in the 50 to 100 MeV/A range, central collisions have high multiplicty of IMF's with broad angular correlations consistent with a large participant region, effects of final state Coulomb interactions are observed and give information on the size and temporal behavior of the source, true fission yields are dependent on target fissility and correlated with relatively peripheral collisions. Analysis of fission and evaporation yields implies limiting conditions for which fission decay remains a viable deexcitation channel. (orig.)

  3. Fission in intermediate energy heavy ion reactions

    International Nuclear Information System (INIS)

    Wilhelmy, J.B.; Begemann-Blaich, M.; Blaich, T.

    1989-01-01

    A systematic study of reaction mechanisms at intermediate energies (50--100 MeV/A) has been performed at the Lawrence Berkeley Laboratory's BeValac using medium weight projectiles on medium and heavy element targets. A gas and plastic phoswich detector system was employed which gave large geometric coverage and a wide dynamic response. The particles identified with the gas detectors could be characterized into three components - intermediate mass fragments (IMF), fission fragments (FF) and heavy residues (HR). Major observed features are: the reaction yields are similar in the 50 to 100 MeV/A range, central collisions have high multiplicity of IMF's with broad angular correlations consistent with a large participant region, effects of final state Coulomb interactions are observed and give information on the size and temporal behavior of the source, true fission yields are dependent on target fissility and correlated with relatively peripheral collisions. Analysis of fission and evaporation yields implies limiting conditions for which fission decay remains a viable deexcitation channel. 7 figs

  4. Nuclear Energy, Long Term Requirements

    International Nuclear Information System (INIS)

    Knapp, V.

    2006-01-01

    There are serious warnings about depletion of oil and gas and even more serious warnings about dangers of climate change caused by emission of carbon dioxide. Should developed countries be called to replace CO2 emitting energy sources as soon as possible, and the time available may not be longer then few decades, can nuclear energy answer the call and what are the requirements? Assuming optimistic contribution of renewable energy sources, can nuclear energy expand to several times present level in order to replace large part of fossil fuels use? Paper considers intermediate and long-term requirements. Future of nuclear power depends on satisfactory answers on several questions. First group of questions are those important for near and intermediate future. They deal with economics and safety of nuclear power stations in the first place. On the same time scale a generally accepted concept for radioactive waste disposal is also required. All these issues are in the focus of present research and development. Safer and more economical reactors are targets of international efforts in Generation IV and INPRO projects, but aiming further ahead these innovative projects are also addressing issues such as waste reduction and proliferation resistance. However, even assuming successful technical development of these projects, and there is no reason to doubt it, long term and large-scale nuclear power use is thereby not yet secured. If nuclear power is to play an essential role in the long-term future energy production and in reduction of CO2 emission, than several additional questions must be replied. These questions will deal with long-term nuclear fuel sufficiency, with necessary contribution of nuclear power in sectors of transport and industrial processes and with nuclear proliferation safety. This last issue is more political then technical, thus sometimes neglected by nuclear engineers, yet it will have essential role for the long-term prospects of nuclear power. The

  5. The radial shapes of intermediate energy microscopic optical potentials

    International Nuclear Information System (INIS)

    Shen Qingbiao; Wang Chang; Tian Ye; Zhuo Yizhong

    1984-01-01

    The radial shapes of intermediate energy proton microscopic optical potentials of 40 Ca are calculated with nuclear matter approach by Skyrme interactions. The calculated results show that the real central potential in central region of nucleus changes from attractive to repulsive when the energy of incident nucleon is above 150 MeV and appears apparently a 'wine-bottle-bottom' shape in the transition energy region (from 150 MeV to 300 MeV). This tendency is consistent with empirical optical potential obtained through fitting experiments and microscopic optical potential calculated with relativistic mean field theory as well as with the BHF theory. The calculated imaginary part of the microscopic optical potential changes from the dominant surface absorption into the volume absorption and its absolute value become larger as energy increases. The effects of Skyrme force parameters to the radial shape of the calculated microscopic optical potential are analysed in detail

  6. Nuclear energy and the nuclear energy industry

    International Nuclear Information System (INIS)

    Bromova, E.; Vargoncik, D.; Sovadina, M.

    2013-01-01

    A popular interactive multimedia publication on nuclear energy in Slovak. 'Nuclear energy and energy' is a modern electronic publication that through engaging interpretation, combined with a number of interactive elements, explains the basic principles and facts of the peaceful uses of nuclear energy. Operation of nuclear power plants, an important part of the energy resources of developed countries, is frequently discussed topic in different social groups. Especially important is truthful knowledgeability of the general public about the benefits of technical solutions, but also on the risks and safety measures throughout the nuclear industry. According to an online survey 'Nuclear energy and energy' is the most comprehensive electronic multimedia publication worldwide, dedicated to the popularization of nuclear energy. With easy to understand texts, interactive and rich collection of accessories stock it belongs to modern educational and informational titles of the present time. The basic explanatory text of the publication is accompanied by history and the present time of all Slovak nuclear installations, including stock photos. For readers are presented the various attractions legible for the interpretation, which help them in a visual way to make a more complete picture of the concerned issue. Each chapter ends with a test pad where the readers can test their knowledge. Whole explanatory text (72 multimedia pages, 81,000 words) is accompanied by a lot of stock of graphic materials. The publication also includes 336 photos in 60 thematic photo galleries, 45 stock charts and drawings, diagrams and interactive 31 videos and 3D models.

  7. Intermediate energy semileptonic probes of the hadronic neutral current

    International Nuclear Information System (INIS)

    Musolf, M.J.; Donnelly, T.W.; Dubach, J.; Beise, E.J.; Maryland Univ., College Park, MD

    1993-06-01

    The present status and future prospects of intermediate-energy semileptonic neutral current studies are reviewed. Possibilities for using parity-violating electron scattering from nucleons and nuclei to study hadron structure and nuclear dynamics are emphasized, with particular attention paid to probes of strangeness content in the nucleon. Connections are drawn between such studies and tests of the electroweak gauge theory using electron or neutrino scattering. Outstanding theoretical issues in the interpretation of semileptonic neutral current measurements are highlighted and the prospects for undertaking parity-violating electron or neutrino scattering experiments in the near future are surveyed

  8. An analytic distorted wave approximation for intermediate energy proton scattering

    International Nuclear Information System (INIS)

    Di Marzio, F.; Amos, K.

    1982-01-01

    An analytic Distorted Wave approximation has been developed for use in analyses of intermediate energy proton inelastic scattering from nuclei. Applications are made to analyse 402 and 800 MeV data from the isoscalar and isovector 1 + and 2 + states in 12 C and to the 800 MeV data from the excitation of the 2 - (8.88MeV) state in 16 O. Comparisons of predictions made using different model two-nucleon t-matrices and different models of nuclear structure are given

  9. Nuclear energy in Finland

    International Nuclear Information System (INIS)

    2008-01-01

    The booklet provides and up-to-date overview of the use of nuclear energy in Finland as well as future plans regarding the nuclear energy sector. It is intended for people working in the nuclear or energy sector in other countries, as well as for those international audiences and decision-makers who would like to have extra information on this particular energy sector. In the booklet nuclear energy is described as part of the Finnish electricity market

  10. International codes and model intercomparison for intermediate energy activation yields

    International Nuclear Information System (INIS)

    Rolf, M.; Nagel, P.

    1997-01-01

    The motivation for this intercomparison came from data needs of accelerator-based waste transmutation, energy amplification and medical therapy. The aim of this exercise is to determine the degree of reliability of current nuclear reaction models and codes when calculating activation yields in the intermediate energy range up to 5000 MeV. Emphasis has been placed for a wide range of target elements ( O, Al, Fe, Co, Zr and Au). This work is mainly based on calculation of (P,xPyN) integral cross section for incident proton. A qualitative description of some of the nuclear models and code options employed is made. The systematics of graphical presentation of the results allows a quick quantitative measure of agreement or deviation. This code intercomparison highlights the fact that modeling calculations of energy activation yields may at best have uncertainties of a factor of two. The causes of such discrepancies are multi-factorial. Problems are encountered which are connected with the calculation of nuclear masses, binding energies, Q-values, shell effects, medium energy fission and Fermi break-up. (A.C.)

  11. Nuclear energy in Japan

    International Nuclear Information System (INIS)

    Guillemard, B.

    1978-01-01

    After having described the nuclear partners in Japan, the author analyzes the main aspects of Japan's nuclear energy: nuclear power plants construction program; developping of light water reactors; fuel cycle politics [fr

  12. Nuclear energy data 2011

    CERN Document Server

    2011-01-01

     . Nuclear Energy Data, the OECD Nuclear Energy Agency's annual compilation of statistics and country reports on nuclear energy, contains official information provided by OECD member country governments on plans for new nuclear plant construction, nuclear fuel cycle developments as well as current and projected nuclear generating capacity to 2035. For the first time, it includes data for Chile, Estonia, Israel and Slovenia, which recently became OECD members. Key elements of this edition show a 2% increase in nuclear and total electricity production and a 0.5% increase in nuclear generating ca

  13. Nuclear energy data 2005

    CERN Document Server

    Publishing, OECD

    2005-01-01

    This 2005 edition of Nuclear Energy Data, the OECD Nuclear Energy Agency's annual compilation of essential statistics on nuclear energy in OECD countries, offers a projection horizon lengthened to 2025 for the first time.  It presents the reader with a comprehensive overview on the status and trends in nuclear electricity generation in OECD countries and in the various sectors of the nuclear fuel cycle.

  14. Study of nuclear reactions involving heavy nuclei and intermediate- and high-energy protons and an application in nuclear reactor physics (ADS); Estudo das reacoes nucleares envolvendo nucleos pesados e protons a energias intermediarias e altas de uma aplicacao em fisica de reatores nucleares (ADS)

    Energy Technology Data Exchange (ETDEWEB)

    Matuoka, Paula Fernanda Toledo

    2016-07-01

    In the present work, intermediate- and high-energy nuclear reactions involving heavy nuclei and protons were studied with the Monte Carlo CRISP (Rio - Ilheus - Sao Paulo Collaboration) model. The most relevant nuclear processes studied were intranuclear cascade and fission-evaporation competition. Preliminary studies showed fair agreement between CRISP model calculation and experimental data of multiplicity of evaporated neutrons (E < 20 MeV) from the p(1200 MeV) + {sup 208}Pb reaction and of spallation residues from the p(1000 MeV) + {sup 208}Pb reaction. The investigation of neutron multiplicity from proton-induced fission of {sup 232}Th up to 85 MeV showed that it was being overestimated by CRISP model; on the other hand, fission cross section were being underestimated. This behavior is due to limitations of the intranuclear cascade model for low-energies (around 50 MeV). The p(1200 MeV) + {sup 208}Pb reaction was selected for the study of a spallation neutron source. High-energy neutrons (E > 20 MeV) were emitted mostly in the intranuclear cascade stage, while evaporation presented larger neutron multiplicity. Fission cross section of 209 mb and spallation cross section of 1788 mb were calculated both in agreement with experimental data. The fission process resulted in a symmetric mass distribution. Another Monte Carlo code, MCNP, was used for radiation transport in order to understand the role of a spallation neutron source in a ADS (Accelerator Driven System) nuclear reactor. Initially, a PWR reactor was simulated to study the isotopic compositions in spent nuclear fuel. As a rst attempt, a spallation neutron source was adapted to an industrial size nuclear reactor. The results showed no evidence of incineration of transuranic elements and modifications were suggested. (author)

  15. Photofissility of actinide nuclei at intermediate energies

    International Nuclear Information System (INIS)

    Deppman, A.; Tavares, O.A.P.; Duarte, S.B.; Oliveira, E.C. de; Arruda-Neto, J.D.T.; Pina, S.R. de; Likhachev, V.P.; Mesa, J.; Goncalves, M.

    2001-08-01

    We analyze the recent experimental data on photofissility for 237 Np, 238 U, and 232 Th at incident photon energies above 200 MeV. For this analysis, we developed a Monte carlo algorithm for the nuclear evaporation process in photonuclear reactions. This code is used in association with the multi-collisional model for the photon-induced intranuclear cascade process. Our results show a good quantitative and qualitative agreement with the experimental data. It is shown that the emission of protons and alpha particles at the evaporation stage is an important component for the non-saturation of the actinides photofissility up to, at least, 1GeV. (author)

  16. Nuclear energy basic knowledge

    International Nuclear Information System (INIS)

    Volkmer, Martin

    2013-11-01

    The following topics are dealt with: Atoms, nuclear decays and radioactivity, energy, nuclear fission and the chain reaction, controlled nuclear fission, nuclear power plants, safety installations in nuclear power plants, fuel supply and disposal, radiation measurement and radiation exposition of man. (HSI)

  17. Nuclear energy - some aspects

    International Nuclear Information System (INIS)

    Bandeira, Fausto de Paula Menezes

    2005-05-01

    This work presents a brief history of research and development concerning to nuclear technology worldwide and in Brazil, also information about radiations and radioactive elements as well; the nuclear technology applications; nuclear reactor types and functioning of thermonuclear power plants; the number of existing nuclear power plants; the nuclear hazards occurred; the national fiscalization of nuclear sector; the Brazilian legislation in effect and the propositions under proceduring at House of Representatives related to the nuclear energy

  18. Nuclear energy. Economical aspects

    International Nuclear Information System (INIS)

    Legee, F.

    2010-01-01

    This document present 43 slides of a power point presentation containing detailed data on economical and cost data for nuclear energy and nuclear power plants: evolution from 1971 to 2007 of world total primary energy supply, development of nuclear energy in the world, nuclear power plants in the world in 2009, service life of nuclear power plants and its extension; nuclear energy market and perspectives at 2030, the EPR concept (generation III) and its perspectives at 2030 in the world; cost assessment (power generation cost, nuclear power generation cost, costs due to nuclear safety, comparison of investment costs for gas, coal and nuclear power generation, costs for building a nuclear reactor and general cost; cost for the entire fuel cycle, the case of the closed cycle with recycling (MOX); costs for radioactive waste storage; financial costs and other costs such as environmental impacts, strategic stocks, comparative evaluation of the competitiveness of nuclear versus coal and gas

  19. Technology Roadmaps: Nuclear Energy

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2010-07-01

    This nuclear energy roadmap has been prepared jointly by the IEA and the OECD Nuclear Energy Agency (NEA). Unlike most other low-carbon energy sources, nuclear energy is a mature technology that has been in use for more than 50 years. The latest designs for nuclear power plants build on this experience to offer enhanced safety and performance, and are ready for wider deployment over the next few years. Several countries are reactivating dormant nuclear programmes, while others are considering nuclear for the first time. China in particular is already embarking on a rapid nuclear expansion. In the longer term, there is great potential for new developments in nuclear energy technology to enhance nuclear's role in a sustainable energy future.

  20. Sustainable nuclear energy dilemma

    Directory of Open Access Journals (Sweden)

    Afgan Naim H.

    2013-01-01

    Full Text Available Sustainable energy development implies the need for the emerging potential energy sources which are not producing adverse effect to the environment. In this respect nuclear energy has gained the complimentary favor to be considered as the potential energy source without degradation of the environment. The sustainability evaluation of the nuclear energy systems has required the special attention to the criteria for the assessment of nuclear energy system before we can make firm justification of the sustainability of nuclear energy systems. In order to demonstrate the sustainability assessment of nuclear energy system this exercise has been devoted to the potential options of nuclear energy development, namely: short term option, medium term option, long term option and classical thermal system option. Criteria with following indicators are introduced in this analysis: nuclear indicator, economic indicator, environment indicator, social indicator... The Sustainability Index is used as the merit for the priority assessment among options under consideration.

  1. Heavy ion collisions at intermediate energy

    International Nuclear Information System (INIS)

    Bertsch, G.; Amsden, A.A.

    1978-01-01

    Two types of measurement are proposed for the analysis of heavy ion collisions in the range of energy of 20--200 MeV/A. First, measurement of the longitudinal component of the kinetic energy of the collision products characterizes the impact parameter of the collision. The distribution in this quantity allows the dissipation in the theoretical models to be determined. A second kind of measurement is that of the coefficients of a spherical harmonic expansion of the angular distribution of the products. Besides giving independent information on the impact parameter and reaction dynamics, measurement of these coefficients offers the possibility of measuring the stiffness of the equation of state of nuclear matter. These ideas are explored in the context of a hydrodynamic model for the collision. In the purely hydrodynamic model there is a large measurable asymmetry in the angular distribution, but the dependence on the equation of state is small

  2. Electricity and nuclear energy

    International Nuclear Information System (INIS)

    Krafft, P.

    1987-01-01

    Consequences of getting out from nuclear energy are discussed. It is concluded that the Chernobyl accident is no reason to withdraw confidence from Swiss nuclear power plants. There are no sufficient economizing potential and other energies at disposal to substitute nuclear energy. Switching to coal, oil and gas would increase environmental damages. Economic and social cost of getting out would be too high

  3. Nuclear energy data

    International Nuclear Information System (INIS)

    2004-01-01

    This new edition of Nuclear Energy Data, the OECD Nuclear Energy Agency's annual compilation of essential statistics on nuclear energy in OECD countries, offers additional graphical information as compared with previous editions allowing a rapid comparison between capacity and requirements in the various phases of the nuclear fuel cycle. It provides the reader with a comprehensive but easy-to-access overview on the status of and trends in the nuclear power and fuel cycle sector. This publication is an authoritative information source of interest to policy makers, experts and academics involved in the nuclear energy field. (author)

  4. Nuclear energy dictionary

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1978-03-15

    This book is a dictionary for nuclear energy which lists the technical terms in alphabetical order. It adds four appendixes. The first appendix is about people involved with nuclear energy. The second one is a bibliography and the third one is a checklist of German, English and Korean. The last one has an index. This book gives explanations on technical terms of nuclear energy such as nuclear reaction and atomic disintegration.

  5. Nuclear energy dictionary

    International Nuclear Information System (INIS)

    1978-03-01

    This book is a dictionary for nuclear energy which lists the technical terms in alphabetical order. It adds four appendixes. The first appendix is about people involved with nuclear energy. The second one is a bibliography and the third one is a checklist of German, English and Korean. The last one has an index. This book gives explanations on technical terms of nuclear energy such as nuclear reaction and atomic disintegration.

  6. Nuclear energy in Spain

    International Nuclear Information System (INIS)

    Villota, C. de

    2007-01-01

    Carlos Villota. Director of Nuclear Energy of UNESA gave an overview of the Spanish nuclear industry, the utility companies and the relevant institutions. Companies of the nuclear industry include firms that produce heavy components or equipment (ENSA), manufacturers of nuclear fuel (ENUSA), engineering companies, the National Company for Radioactive Waste Management (ENRESA), and nuclear power plants (nine units at seven sites). Nuclear energy is a significant component of the energy mix in Spain: 11% of all energy produced in Spain is of nuclear origin, whilst the share of nuclear energy in the total electricity generation is approximately 23%. The five main players of the energy sector that provide for the vast majority of electricity production, distribution, and supply have formed the Spanish Electricity Industry Association (UNESA). The latter carries out co-ordination, representation, management and promotion tasks for its members, as well as the protection of their business and professional interests. In the nuclear field, UNESA through its Nuclear Energy Committee co-ordinates aspects related to nuclear safety and radiological protection, regulation, NPP operation and R and D. Regarding the institutional framework of the nuclear industry, ENSA, ENUSA and ENRESA are controlled by the national government through the Ministry of Economy and Finance and the Ministry of Science and Technology. All companies of the nuclear industry are licensed by the Ministry of Industry, Tourism and Trade (MITYC), while the regulatory body is the Nuclear Safety Council (CSN). It is noteworthy that CSN is independent of the government, as it reports directly to Parliament. (author)

  7. Soft energy vs nuclear energy

    International Nuclear Information System (INIS)

    Ando, Yoshio

    1981-01-01

    During the early 1960s, a plentiful, inexpensive supply of petroleum enabled Japanese industry to progress rapidly; however, almost all of this petroleum was imported. Even after the first oil crisis of 1973, the recent annual energy consumption of Japan is calculated to be about 360 million tons in terms of petroleum, and actual petroleum forms 73% of total energy. It is necessary for Japan to reduce reliance on petroleum and to diversify energy resources. The use of other fossil fuels, such as coal, LNG and LPG, and hydraulic energy, is considered as an established alternative. In this presentation, the author deals with new energy, namely soft energy and nuclear energy, and discusses their characteristics and problems. The following kinds of energy are dealt with: a) Solar energy, b) Geothermal energy, c) Ocean energy (tidal, thermal, wave), d) Wind energy, e) Biomass energy, f) Hydrogen, g) Nuclear (thermal, fast, fusion). To solve the energy problem in future, assiduous efforts should be made to develop new energy systems. Among them, the most promising alternative energy is nuclear energy, and various kinds of thermal reactor systems have been developed for practical application. As a solution to the long-term future energy problem, research on and development of fast breeder reactors and fusion reactors are going on. (author)

  8. Deuterons and flow: At intermediate AGS energies

    International Nuclear Information System (INIS)

    Kahana, D.E.; Pang, Y.; Kahana, S.H.

    1996-06-01

    A quantitative model, based on hadronic physics and Monte Carlo cascading is applied to heavy ion collisions at BNL-AGS and BEVALAC energies. The model was found to be in excellent agreement with particle spectra where data previously existed, for Si beams, and was able to successfully predict the spectra where data was initially absent, for Au beams. For Si + Au collisions baryon densities of three or four times the normal nuclear matter density (ρ 0 ) are seen in the theory, while for Au + Au collisions, matter at densities up to 10 ρ 0 is anticipated. The possibility that unusual states of matter may be created in the Au beams and potential signatures for its observation, in particular deuterons and collective flow, are considered

  9. Nuclear energy in Finland

    International Nuclear Information System (INIS)

    2011-01-01

    The purpose of the booklet is to provide an up-to-date overview of the use of nuclear energy in Finland as well as future plans regarding the nuclear energy sector. It is intended for people working in the nuclear energy or other energy sectors in other countries, as well as for those international audiences and decision-makers who would like to have extra information on this particular energy sector. Nuclear energy is described as part of the Finnish electricity market. (orig.)

  10. Nuclear energy and environment

    International Nuclear Information System (INIS)

    Alves, R.N.

    1987-01-01

    A general view about the use of energy for brazilian development is presented. The international situation of the nuclear field and the pacific utilization of nuclear energy in Brazil are commented. The safety concepts used for reactor and nuclear facilities licensing, the environmental monitoring program and radiation protection program used in Brazil are described. (E.G.) [pt

  11. Nuclear energy data 2007

    International Nuclear Information System (INIS)

    2007-01-01

    This new edition of Nuclear Energy Data, the OECD Nuclear Energy Agency's annual compilation of essential statistics on nuclear energy in OECD countries, offers projections lengthened to 2030 for the first time and information on the development of new centrifuge enrichment capacity in member countries. The compilation gives readers a comprehensive and easy-to-access overview of the current situation and expected trends in various sectors of the nuclear fuel cycle, providing authoritative information to policy makers, experts and academics working in the nuclear energy field

  12. A brief review of intermediate controlled nuclear syntheses (ICNS) without harmful radiations

    Energy Technology Data Exchange (ETDEWEB)

    Lanjewar, R. B. [Department of Chemistry Dharampeth M. P. Deo Memorial Science College, NAGPUR-440033, India rb-lanjewar@rediffmail.com (India)

    2015-03-10

    Hadronic mechanics gave birth to new magnecular fuels. The present day demand is of clean energy source that is cheap and abundant. Clean energy can be obtained by harnessing renewable energy sources like solar, wind etc. Nuclear energy conventionally produced by fission reactions emits hazardous radiation and radioactive waste. The requirements of clean and safe energy gets fulfilled by novel fuel that achieved by elevating the traditional quantum mechanics to hadronic mechanics and to hadronic chemistry. In the present paper, a comprehensive review on both the theoretical and experimental aspect of the Intermediate Controlled Nuclear Synthesis (ICNS) as developed by Italian American Scientist Professor R. M. Santilli.

  13. Experimental studies of pion-nucleus interactions at intermediate energies

    International Nuclear Information System (INIS)

    1991-01-01

    This report summarizes the work on experimental research in intermediate energy nuclear physics carried out at New Mexico State University in 1991 under a great from the US Department of Energy. Most of these studies have involved investigations of various pion-nucleus interactions. The work has been carried out both with the LAMPF accelerator at the Los Alamos National Laboratory and with the cyclotron at the Paul Scherrer Institute (PSI) near Zurich, Switzerland. Part of the experimental work involves measurements of new data on double-charge-exchange scattering, using facilities at LAMPF which we helped modify, and on pion absorption, using a new detector system at PSI that covers nearly the full solid-angle region which we helped construct. Other work involved preparation for future experiments using polarized nuclear targets and a new high-resolution spectrometer system for detecting π 0 mesons. We also presented several proposals for works to be done in future years, involving studies related to pi-mesonic atoms, fundamental pion-nucleon interactions, studies of the difference between charged and neutral pion interactions with the nucleon, studies of the isospin structure of pion-nucleus interactions, and pion scattering from polarized 3 He targets. This work is aimed at improving our understanding of the pion-nucleon interaction, of the pion-nucleus interaction mechanism, and of nuclear structure

  14. Dynamics of light, intermediate, heavy and superheavy nuclear ...

    Indian Academy of Sciences (India)

    2014-05-01

    May 1, 2014 ... Various features related to the dynamics of competing decay modes of nuclear systems are explored by addressing the experimental data of a number of reactions in light, intermediate, heavy and superheavy mass regions. The DCM, being a non-statistical description for the decay of a com- pound nucleus ...

  15. Improvement of the intranuclear cascade code of Bruyeres-le-Chatel (BRIC) at low intermediate energy

    International Nuclear Information System (INIS)

    Duarte, H.

    2003-01-01

    The IntraNuclear cascade code of Bruyeres-le-Chatel called BRIC has been extended to low intermediate energy by taking in account some medium effects that are included in other nuclear dynamics models such as BUU or QMD. The results of BRIC 1.4 with the medium effects are in better agreement with experimental data than those of the first version on a wide range of incident energy, especially at low intermediate energy. We may conclude that no preequilibrium model is necessary between our INC and the deexcitation step. (orig.)

  16. Nuclear energy and society

    International Nuclear Information System (INIS)

    Bakacs, Istvan; Czeizel, Endre; Hajdu, Janos; Marx, Gyoergy.

    1984-01-01

    The text of a round-table discussion held on the occasion of the 50th anniversary of the discovery of neutron is given. The participants were the Chief Engineer of the Paks Nuclear Power Plant, the first nuclear power plant in Hungary started in November 1982, a geneticist treating the problems of genetic damages caused by nuclear and chemical effects, a nuclear physicist and a journalist interested in the social aspects of nuclear energy. They discussed the political, economical and social problems of nuclear energy in the context of its establishment in Hungary. (D.Gy.)

  17. Reinforced concrete in the intermediable-level nuclear waste repository

    International Nuclear Information System (INIS)

    Duffo, Gustavo

    2009-01-01

    The National Atomic Energy Commission (CNEA) is responsible for developing the nuclear waste disposal management programme. This programme contemplates the design and construction of a facility for the final disposal of intermediate-level radioactive wastes. The proposed model is a near-surface monolithic repository similar to those in operation in El Cabril, Spain. The design of this type of repository is based on the use of multiple, independent and redundant barriers and the model foresees a period of 300 years of institutional post-closure control. Since the vault and cover are major components of the engineered barriers, the durability of these concrete structures is an important aspect for the facility integrity. This work presents laboratory investigations performed on the corrosion susceptibility of steel rebars embedded in two different types of high performance reinforced concretes, recently developed by the National Institute of Industrial Technology (Argentine). Concretes were made with cement with Blast Furnace Slag (CAH) and Silica Fume cement (CAH + SF). The aim of this work is to predict the service life of the intermediate level radioactive waste disposal vaults from data obtained from electrochemical techniques. Besides, the diffusion coefficients of aggressive species, such as chloride and carbon dioxide, were also determined. On the other hand, data obtained with corrosion sensors embedded in a vault prototype is also included. These sensors allow on-line measurements of several parameters related to the corrosion process such as rebar corrosion potential and corrosion current density; incoming oxygen flow that reaches the metal surface; concrete electrical resistivity; chloride concentration and internal concrete temperature. All the information obtained from both, laboratory tests and sensors will be used for the final design of the container in order to achieve a service life more or equal than the foreseen durability for this type of

  18. Nuclear energy and nuclear technology

    International Nuclear Information System (INIS)

    Luescher, E.

    1982-01-01

    This book originated in the training courses for teachers of grammar- and secondary schools in Dillingen (Bavaria). The aim of these courses is to become informed about the latest state in one field of physics. The lectures are well-known experts in the respective fields. In the latest study (1980) of the National Academy of Sciences the experts came to the conclusion that without further development nuclear power plants the utilization of too much coal would become necessary and involve irreversible environmental damage (see chapter 6). There are two important obstacles impeding the further extension of nuclear energy. The first problem to be solved is the processing and storage of radioactive waste. This is a more technical task and can be treated in a satisfactory way. The second obstacle is less easy to take as the population has to be convinced that a nuclear power plant can be operated with almost unbelievable safety (see chapter 5) and be shut down safely in the case of incidents. The most promising possibility of controlled nuclear fusion as energy source is still many decades- if feasible at all- away from being performed (see chapter. 7). In the Soviet Union 25% of the electric energy production shall be proceed from nuclear power plants by the year 1990. (orig./GL) [de

  19. Nuclear energy questions

    International Nuclear Information System (INIS)

    This work pack contains illustrated booklets entitled: 'Uranium mining'; 'Reactors and radiation'; 'Nuclear waste'; 'Work book on energy'; 'Alternatives now'; 'Future energy choices'; 'Resources handbook'; and 'Tutors' guidelines': a map entitled 'Nuclear power in Britain': and two coloured pictures entitled 'Nuclear prospects' and 'Safe energy'. A cover note states that the material has been prepared for use in schools and study groups. (U.K.)

  20. Germany bars nuclear energy

    International Nuclear Information System (INIS)

    Gaullier, V.

    1999-01-01

    Germany wants a future without nuclear energy, the different steps about the going out of nuclear programs are recalled. The real choice is either fossil energies with their unquestionable safety levels but with an increase of the greenhouse effect or nuclear energy with its safety concerns and waste management problems but without pollutant emission. The debate will have to be set in most European countries. (A.C.)

  1. Nuclear Energy General Objectives

    International Nuclear Information System (INIS)

    2011-01-01

    One of the IAEA's statutory objectives is to 'seek to accelerate and enlarge the contribution of atomic energy to peace, health and prosperity throughout the world'. One way it achieves this objective is to issue publications in various series. Two of these series are the IAEA Nuclear Energy Series and the IAEA Safety Standards Series. According to Article III, paragraph A.6, of the IAEA Statute, the IAEA safety standards establish 'standards of safety for protection of health and minimization of danger to life and property.' The safety standards include the Safety Fundamentals, Safety Requirements and Safety Guides. These standards are primarily written in a regulatory style, and are binding on the IAEA for its own activities. The principal users are Member State regulatory bodies and other national authorities. The IAEA Nuclear Energy Series consists of reports designed to encourage and assist research on, and development and practical application of, nuclear energy for peaceful uses. This includes practical examples to be used by owners and operators of utilities in Member States, implementing organizations, academia and politicians, among others. The information is presented in guides, reports on the status of technology and advances, and best practices for peaceful uses of nuclear energy based on inputs from international experts. The series complements the IAEA's safety standards, and provides detailed guidance, experience, good practices and examples on the five areas covered in the IAEA Nuclear Energy Series. The Nuclear Energy Basic Principles is the highest level publication in the IAEA Nuclear Energy Series and describes the rationale and vision for the peaceful uses of nuclear energy. It presents eight Basic Principles on which nuclear energy systems should be based to fulfil nuclear energy's potential to help meet growing global energy needs. The Nuclear Energy Series Objectives are the second level publications. They describe what needs to be

  2. Nuclear energy and society

    International Nuclear Information System (INIS)

    Sobajima, Makoto; Shimooka, Hiroshi; Tanaka, Yasumasa; Fujii, Yasuhiko; Misima, Tsuyoshi

    2004-01-01

    Nuclear energy has a strong relation to a society. However, due to accidents and scandals having occurred in recent years, people's reliability to nuclear energy has significantly swayed and is becoming existence of a worry. Analyzing such a situation and grasping the problem contained are serious problems for people engaging in nuclear field. In order that nuclear energy is properly used in society, communication with general public and in nuclear power plant site area are increasingly getting important as well as grasping the situation and surveying measures for overcoming the problems. On the basis of such an analysis, various activities for betterment of public acceptance of nuclear energy by nuclear industry workers, researchers and the government are proposed. (J.P.N.)

  3. Dare nuclear energy with the Australian Nuclear Association

    International Nuclear Information System (INIS)

    Anon.

    2016-01-01

    Australian authorities have been traditionally opposed to nuclear energy. The interdiction to build nuclear power plants in the Australian states without the approval of the federal authority was even officially written in the environment code in 1999. Today coal provides 75% of the electricity needs of Australia. Because of climate warming, things are changing, the Australian government is now considering the possibility of using nuclear energy and a site located in southern Australian has been selected for the disposal of low and intermediate level radioactive wastes. In this context the Australian Nuclear Association (ANA) is developing an ambitious program for the promotion of all the applications of nuclear energy through the organisation of conferences and meetings with various experts of nuclear industry. The aim is to make the public aware of the assets of nuclear energy. (A.C.)

  4. Introduction to nuclear energy

    International Nuclear Information System (INIS)

    2004-01-01

    After some descriptions about atoms, fission and fusion, explanations are given about the functioning of a nuclear power plant. The safety with the different plans of emergency and factors that lead to a better nuclear safety are exposed, then comes a part for the environmental protection; the fuel cycle is tackled. Some historical aspects of nuclear energy finish this file. (N.C.)

  5. Nuclear energy technology

    Science.gov (United States)

    Buden, David

    1992-01-01

    An overview of space nuclear energy technologies is presented. The development and characteristics of radioisotope thermoelectric generators (RTG's) and space nuclear power reactors are discussed. In addition, the policy and issues related to public safety and the use of nuclear power sources in space are addressed.

  6. Nuclear energy and security

    International Nuclear Information System (INIS)

    Blejwas, Thomas E.; Sanders, Thomas L.; Eagan, Robert J.; Baker, Arnold B.

    2000-01-01

    Nuclear power is an important and, the authors believe, essential component of a secure nuclear future. Although nuclear fuel cycles create materials that have some potential for use in nuclear weapons, with appropriate fuel cycles, nuclear power could reduce rather than increase real proliferation risk worldwide. Future fuel cycles could be designed to avoid plutonium production, generate minimal amounts of plutonium in proliferation-resistant amounts or configurations, and/or transparently and efficiently consume plutonium already created. Furthermore, a strong and viable US nuclear infrastructure, of which nuclear power is a large element, is essential if the US is to maintain a leadership or even participatory role in defining the global nuclear infrastructure and controlling the proliferation of nuclear weapons. By focusing on new fuel cycles and new reactor technologies, it is possible to advantageously burn and reduce nuclear materials that could be used for nuclear weapons rather than increase and/or dispose of these materials. Thus, the authors suggest that planners for a secure nuclear future use technology to design an ideal future. In this future, nuclear power creates large amounts of virtually atmospherically clean energy while significantly lowering the threat of proliferation through the thoughtful use, physical security, and agreed-upon transparency of nuclear materials. The authors must develop options for policy makers that bring them as close as practical to this ideal. Just as Atoms for Peace became the ideal for the first nuclear century, they see a potential nuclear future that contributes significantly to power for peace and prosperity

  7. Radioactivity and nuclear energy

    International Nuclear Information System (INIS)

    Hoffmann, J.; Kuczera, B.

    2001-05-01

    The terms radioactivity and nuclear energy, which have become words causing irritation in the political sphere, actually represent nothing but a large potential for innovative exploitation of natural resources. The contributions to this publication of the Karlsruhe Research Center examine more closely three major aspects of radioactivity and nuclear energy. The first paper highlights steps in the history of the discovery of radioactivity in the natural environment and presents the state of the art in health physics and research into the effects of exposure of the population to natural or artificial radionuclides. Following contributions focus on: Radiochemical methods applied in the medical sciences (diagnostic methods and devices, therapy). Nuclear energy and electricity generation, and the related safety policies, are an important subject. In this context, the approaches and pathways taken in the field of nuclear science and technology are reported and discussed from the angle of nuclear safety science, and current trends are shown in the elaboration of advanced safety standards relating to nuclear power plant operation and ultimate disposal of radioactive wastes. Finally, beneficial aspects of nuclear energy in the context of a sustainable energy policy are emphasized. In particular, the credentials of nuclear energy in the process of building an energy economy based on a balanced energy mix which combines economic and ecologic advantages are shown. (orig./CB) [de

  8. Nuclear energy in view

    International Nuclear Information System (INIS)

    1982-01-01

    This leaflet advertises the availability of the following from UKAEA: film and video titles (nuclear fuel cycle; energy for all; power from the atom; using radioactivity; fast reactor; energy - the nuclear option; principles of fission; radiation); slide-tape packs (16 titles); other information services. (U.K.)

  9. Nuclear energy in China

    International Nuclear Information System (INIS)

    Gourievidis, G.

    1984-01-01

    Having first outlined the main problems China must resolve in the field of energy supply, this paper presents the nuclear option trends established by the government, recalls the different stages in the nuclear Chinese development programme, achievements and projects. The organization of nuclear research and industry, as also the fuel cycle situation and uranium resources are then described. Finally, the international nuclear cooperation policy carried out by the chinese government and more particularly the agreement settled with France are presented [fr

  10. Nuclear energy, economy, ecology

    International Nuclear Information System (INIS)

    Stoffaes, C.

    1995-01-01

    As its operating role, its economic competitiveness and its technological control in the area of nuclear energy, the France has certainly to take initiatives in a nuclear renewal activity. The France is criticized in the world for its exclusive position about nuclear energy, but it is well situated to attract attention on the coal risks and particularly about its combustion for environment. (N.C.)

  11. Nuclear energy inquiries

    International Nuclear Information System (INIS)

    Robertson, J.A.L.

    1993-02-01

    Our choice of energy sources has important consequences for the economy and the environment. Nuclear energy is a controversial energy source, subject to much public debate. Most individuals find it difficult to decide between conflicting claims and allegations in a variety of technical subjects. Under these circumstances, knowledge of various relevant inquiries can be helpful. This publication summarizes the composition and major findings of more than thirty nuclear energy inquiries. Most of the these are Canadian, but others are included where they have relevance. The survey shows that, contrary to some claims, virtually every aspect of nuclear energy has been subject to detailed scrutiny. The inquiries' reports include many recommendations on how nuclear energy can be exploited safely, but none rejects it as an acceptable energy source when needed. (Author) 38 refs

  12. Nuclear Energy Data 2013

    International Nuclear Information System (INIS)

    2013-01-01

    Nuclear Energy Data is the OECD Nuclear Energy Agency's annual compilation of statistics and country reports documenting the status of nuclear power in the OECD area. Information provided by member country governments includes statistics on installed generating capacity, total electricity produced by all sources and by nuclear power, nuclear energy policies and fuel cycle developments, as well as projected generating capacity and electricity production to 2035, where available. Total electricity generation at nuclear power plants and the share of electricity production from nuclear power plants declined in 2012 as a result of operational issues at some facilities and suspended operation at all but two reactors in Japan. Nuclear safety was further strengthened in 2012 following safety reviews prompted by the Fukushima Daiichi nuclear power plant accident. Governments committed to maintaining nuclear power in the energy mix pursued initiatives to increase nuclear generating capacity. In Turkey, plans were finalised for the construction of the first four reactors for commercial electricity production. Further details on these and other developments are provided in the publication's numerous tables, graphs and country reports. This publication contains 'Statlinks'. For each StatLink, the reader will find a URL which leads to the corresponding spreadsheet. These links work in the same way as an Internet link [fr

  13. Is nuclear energy justifiable?

    International Nuclear Information System (INIS)

    Roth, E.

    1988-01-01

    This is a comment on an article by Prof. Haerle a theologist, published earlier under the same heading, in which the use of nuclear energy is rejected for ethical reasons. The comment contents the claim mode by the first author that theologists, because they have general ethical competency, must needs have competency to decide on the fittest technique (of energy conversion) for satisfying, or potentially satisfying, the criteria of responsible action. Thus, an ethical comment on, for instance, nuclear energy is beyond the scope of the competency of the churches. One is only entitled as a private person to objecting to nuclear energy, not because of one's position in the church. (HSCH) [de

  14. Nuclear energy today

    International Nuclear Information System (INIS)

    2003-01-01

    Energy is the power of the world's economies, whose appetite for this commodity is increasing as the leading economies expand and developing economies grow. How to provide the energy demanded while protecting our environment and conserving natural resources is a vital question facing us today. Many parts of our society are debating how to power the future and whether nuclear energy should play a role. Nuclear energy is a complex technology with serious issues and a controversial past. Yet it also has the potential to provide considerable benefits. In pondering the future of this imposing technology, people want to know. - How safe is nuclear energy? - Is nuclear energy economically competitive? - What role can nuclear energy play in meeting greenhouse gas reduction targets? - What can be done with the radioactive waste it generates? - Does its use increase the risk of proliferation of nuclear weapons? - Are there sufficient and secure resources to permit its prolonged exploitation? - Can tomorrow's nuclear energy be better than today's? This publication provides authoritative and factual replies to these questions. Written primarily to inform policy makers, it will also serve interested members of the public, academics, journalists and industry leaders. (author)

  15. Perspectives for nuclear energy

    International Nuclear Information System (INIS)

    Baugnet, J.-M.; Abderrahim, H.A.; Dekeyser, J.; Meskens, G.

    1998-09-01

    In Belgium, approximately 60 percent of the produced electricity is generated by nuclear power. At present, nuclear power production tends to stagnate in Europe and North America but is still growing in Asia. The document gives an overview of the present status and the future energy demand with emphasis on electric power. Different evaluation criteria including factors hindering and factors promoting the expansion of nuclear power as well as requirements of new nuclear power plants are discussed. The extension of the lifetime of existing facilities as well as fuel supply are taken into consideration. A comparative assesment of nuclear power with other energy sources is made. The report concludes with estimating the contribution and the role of nuclear power in future energy demand as well as with an overview of future reactors and research and development programmes

  16. Nuclear Energy Data - 2014

    International Nuclear Information System (INIS)

    2014-01-01

    Nuclear Energy Data is the OECD Nuclear Energy Agency's annual compilation of statistics and country reports documenting the status of nuclear power in the OECD area. Information provided by member country governments includes statistics on installed generating capacity, total electricity produced by all sources and by nuclear power, nuclear energy policies and fuel cycle developments, as well as projected generating capacity and electricity production to 2035, where available. Total electricity generation at nuclear power plants and the share of electricity production from nuclear power plants remained steady in 2013 despite the progressive shutdown of all reactors in Japan leading up to September and the permanent closure of six reactors in the OECD area. Governments committed to maintaining nuclear power in the energy mix advanced plans for increasing nuclear generating capacity, and progress was made in the development of deep geological repositories for spent nuclear fuel, with Finland expected to have the first such facility in operation in the early 2020's. Further details on these and other developments are provided in the publication's numerous tables, graphs and country reports. This publication contains 'StatLinks'. For each StatLink, the reader will find a URL which leads to the corresponding spreadsheet. These links work in the same way as an Internet link. (authors)

  17. Nuclear Energy Data - 2016

    International Nuclear Information System (INIS)

    2016-01-01

    Nuclear Energy Data is the Nuclear Energy Agency's annual compilation of statistics and country reports documenting nuclear power status in NEA member countries and in the OECD area. Information provided by governments includes statistics on installed generating capacity, total electricity produced by all sources and by nuclear power, nuclear energy policies and fuel cycle developments, as well as projections of nuclear generating capacity and electricity production to 2035, where available. Total electricity generation at nuclear power plants and the share of electricity production from nuclear power plants increased slightly in 2015, by 0.2% and 0.1%, respectively. Two new units were connected to the grid in 2015, in Russia and Korea; two reactors returned to operation in Japan under the new regulatory regime; and seven reactors were officially shut down - five in Japan, one in Germany and one in the United Kingdom. Governments committed to having nuclear power in the energy mix advanced plans for developing or increasing nuclear generating capacity, with the preparation of new build projects progressing in Finland, Hungary, Turkey and the United Kingdom. Further details on these and other developments are provided in the publication's numerous tables, graphs and country reports. This publication contains 'Stat Links'. For each Stat Link, the reader will find a URL which leads to the corresponding spreadsheet. These links work in the same way as an Internet link. (authors)

  18. International nuclear energy guide

    International Nuclear Information System (INIS)

    Anon.

    1983-01-01

    Separate abstracts are included for each of the papers presented concerning current technical and economical events in the nuclear field. Twelve papers have been abstracted and input to the data base. The ''international nuclear energy guide'' gives a general directory of the name, the address and the telephone number of the companies and bodies quoted in this guide; a chronology of the main events 1982. The administrative and professional organization, the nuclear courses and research centers in France are presented, as also the organization of protection and safety, and of nuclear fuel cycle. The firms concerned by the design and the construction of NSSS and the allied nuclear firms are also presented. The last part of this guide deals with the nuclear energy in the world: descriptive list of international organizations, and, the nuclear activities throughout the world (alphabetical order by countries) [fr

  19. Dossier nuclear energy

    International Nuclear Information System (INIS)

    1993-11-01

    The present Dutch government compiled the title document to enable the future Dutch government to declare its opinion on the nuclear energy problemacy. The most important questions which occupy the Dutch society are discussed: safe application and risks of nuclear energy, radioactive wastes and other environmental aspects, and the possible danger of misusing nuclear technology. In chapter two attention is paid to the policy, as formulated by the Dutch government, with regard to risks of nuclear power plants. Next the technical safety regulations that have to be met are dealt with. A brief overview is given of the state of the art of commercially available nuclear reactors, as well as reactors under development. The nuclear waste problem is the subject of chapter three. Attention is paid to the Dutch policy that has been formulated and is executed, the OPLA-program, in which the underground storage of radioactive wastes is studied, the research on the conversion of long-lived radioactive isotopes to short-lived radioactive isotopes, and planned research programs. In chapter four, other environmental effects of the use of nuclear power are taken into consideration, focusing on the nuclear fuel cycle. International obligations and agreements to guarantee the peaceful use of nuclear energy (non-proliferation) are mentioned and discussed in chapter four. In chapter six the necessity to carry out surveys to determine public support for the use of nuclear energy is outlined. In the appendices nuclear energy reports in the period 1986-present are listed. Also the subject of uranium supplies is discussed and a brief overview of the use of nuclear energy in several other countries is given. 2 tabs., 5 annexes, 63 refs

  20. Correlations between isospin dynamics and Intermediate Mass Fragments emission time scales: a probe for the symmetry energy in asymmetric nuclear matter

    International Nuclear Information System (INIS)

    De Filippo, E; Cardella, G; Guidara, E La; Pagano, A; Papa, M; Amorini, F; Colonna, M; Gianì, S; Grassi, L; Han, J; Maiolino, C; Auditore, L; Minniti, T; Baran, V; Berceanu, I; Geraci, E; Grzeszczuk, A; Guazzoni, P; Lanzalone, G; Lombardo, I

    2013-01-01

    We show new data from the 64 Ni+ 124 Sn and 58 Ni+ 112 Sn reactions studied in direct kinematics with the CHIMERA detector at INFN-LNS and compared with the reverse kinematics reactions at the same incident beam energy (35 A MeV). Analyzing the data with the method of relative velocity correlations, fragments coming from statistical decay of an excited projectile-like (PLF) or target-like (TLF) fragments are discriminated from the ones coming from dynamical emission in the early stages of the reaction. By comparing data of the reverse kinematics experiment with a stochastic mean field (SMF) + GEMINI calculations our results show that observables from neck fragmentation mechanism add valuable constraints on the density dependence of symmetry energy. An indication is found for a moderately stiff symmetry energy potential term of EOS.

  1. Nuclear Energy Data - 2017

    International Nuclear Information System (INIS)

    2017-01-01

    Nuclear Energy Data is the Nuclear Energy Agency's annual compilation of statistics and country reports documenting nuclear power status in NEA member countries and in the OECD area. Information provided by governments includes statistics on total electricity produced by all sources and by nuclear power, fuel cycle capacities and requirements, and projections to 2035, where available. Country reports summarise energy policies, updates of the status in nuclear energy programs and fuel cycle developments. In 2016, nuclear power continued to supply significant amounts of low-carbon baseload electricity, despite strong competition from low-cost fossil fuels and subsidised renewable energy sources. Three new units were connected to the grid in 2016, in Korea, Russia and the United States. In Japan, an additional three reactors returned to operation in 2016, bringing the total to five under the new regulatory regime. Three reactors were officially shut down in 2016 - one in Japan, one in Russia and one in the United States. Governments committed to having nuclear power in the energy mix advanced plans for developing or increasing nuclear generating capacity, with the preparation of new build projects making progress in Finland, Hungary, Turkey and the United Kingdom. Further details on these and other developments are provided in the publication's numerous tables, graphs and country reports

  2. The nuclear energy debate

    International Nuclear Information System (INIS)

    Hardy, D.

    1984-01-01

    We have not been able to obtain closure in the nuclear energy debate because the public perception of nuclear energy is out of sync with reality. The industry has not been about to deal with the concerns of those opposed to nuclear energy because its reaction has been to generate and disseminate more facts rather than dealing with the serious moral and ethical questions that are being asked. Nuclear proponents and opponents appeal to different moral communities, and those outside each community cannot concede that the other might be right. The Interfaith Program for Public Awareness of Nuclear Issues (IPPANI) has been formed, sponsored by members of the Jewish, Baha'i, Roman Catholic, United, and Anglican faiths, to provide for a balanced discussion of the ethical aspects of energy. (L.L.)

  3. Nuclear energy and jobs

    International Nuclear Information System (INIS)

    Goldfinger, N.

    1976-01-01

    Mr. Goldfinger, Research Director of AFL-CIO, examines the problem of energy in general, nuclear in particular, and the employment relationship. The energy shortages in the U.S. and its dependence on oil are cited. Directly connected with this serious problem relating to energy are jobs, income, and living standards. If energy is not available, industries will be unable to expand to meet the needs of the growing population; and prices of goods will rise. From an evaluation of what experts have said, Mr. Goldfinger concludes that increased coal production and better coal technology cannot meet energy demands; so the sharp increase both in volume and as a percentage of total energy needed in the future will have to come from nuclear power. Development of alternative sources is necessary, he feels, and intense research on these is needed now. The employment impact in the nuclear energy scenario is analyzed according to the trades involved. It is estimated that 1.5 million jobs in the nuclear industry would be open by the year 2000 if nuclear is to provide one-fourth of energy supplies. The employment picture, assuming abandonment of nuclear energy, is then discussed

  4. (γ,2n) reactions in complexe nuclei at intermediate energies

    International Nuclear Information System (INIS)

    Pinheiro Filho, J. de D.

    1976-01-01

    The Monte Carlo Method has been used in the intranuclear cascade model for the calculation of the cross sections of the (γ,2n) reactions in complex nuclei 9 Be, 12 C, 16 O, 59 Co, 103 Rh, 127 I, 197 Au and 209 Bi at intermediate energies (200MeV-1000MeV). The initial photon-interaction via the photomesonic and quasi-deuteron mechanisms have been taken into account. The nuclear model used was a degenerate Fermi gas of nucleons, and the Pauli exclusion principle was considered in all secondary interactions. To improve accuracy in the results of the calculations, 30000 cascades have been followed for each target nucleus at a given incident photon energy. The probabilities of the various (γ,2n) reactions, as well as the correspondent cross section obtained, are summarized in tables and graphs. New data on the cross sections of the 59 Co (γ,2n) and 209 Bi (γ,2n) reactions at photon energies between 300 MeV and 1000MeV are also reported. These measurements were obtained with the Bremsstrahlung beams of the Frascati 1 GeV Electron Synchrotron. A comparison between all existing data in the literature on the (γ,2n) reaction cross sections and the estimates by the Monte Carlo Method, is presented. (Author) [pt

  5. Axiology of nuclear energy

    International Nuclear Information System (INIS)

    Sawada, Tetsuo

    2003-01-01

    Nuclear energy was born in World War II and it has grown within the regime of Cold War. When the Cold War came to the end around early 1990 s, we who have benefited by the development of nuclear energy must have been challenged with a new tide of civilization change. Although it has not been so much closely questioned since then, such a new movement, that was submerging, abruptly manifested on September 11, 2001. Then, many of us realized that global circumstances, especially concerned with security, must have actually changed with the reordering of the world basic structures. This paper describes on the thoughts to reveal the cause and background of the event on September 11 with the linkage to nuclear energy development, or nuclear civilization in pursuit of the future regime of nuclear in harmonization with the global society in 21st century. (author)

  6. Development of nuclear energy

    Energy Technology Data Exchange (ETDEWEB)

    Wakeham, John [Secretary of State for Energy, London (UK)

    1991-06-01

    The Government's views on the development of nuclear energy are outlined. In this country, we continue to see some important advantages in maintaining nuclear power generation. It increases diversity, and so helps to maintain security of energy supply. It does not produce greenhouse gases or contribute to acid rain. But it is equally clear that nuclear costs must be brought under control whilst at the same time maintaining the high standards of safety and environmental protection which we have come to expect in the UK. The three main elements which the nuclear industry must address in the future are summarized. First the costs of nuclear generation must be reduced. Secondly, once the feasibility and costings of PWRs have been established consideration must be given to the choices for the future energy policy and thirdly new reactor designs should be standardized so the benefits of replication can be realised. (author).

  7. Environmentalists for nuclear energy

    International Nuclear Information System (INIS)

    Comby, B.

    2001-01-01

    Fossil fuels such as coal oil, and gas, massively pollute the Earth atmosphere (CO, CO 2 , SOX, NOX...), provoking acid rains and changing the global climate by increasing the greenhouse effect, while nuclear energy does not participate in these pollutions and presents well-founded environmental benefits. Renewable energies (solar, wind) not being able to deliver the amount of energy required by populations in developing and developed countries, nuclear energy is in fact the only clean and safe energy available to protect the planet during the 21 century. The first half of the book, titled The Atomic Paradox, describes in layman language the risks of nuclear power, its environmental impact, quality and safety standards, waste management, why a power reactor is not a bomb, energy alternatives, nuclear weapons, and other major global and environmental problems. In each case the major conclusions are framed for greater emphasis. Although examples are taken from the French nuclear power program, the conclusions are equally valid elsewhere. The second half of the book is titled Information on Nuclear Energy and the Environment and briefly provides a historical survey, an explanation of the different types of radiation, radioactivity, dose effects of radiation, Chernobyl, medical uses of radiation, accident precautions, as well as a glossary of terms and abbreviations and a bibliography. (author)

  8. Nuclear Energy and the Environment.

    Science.gov (United States)

    International Atomic Energy Agency, Vienna (Austria).

    "Nuclear Energy and the Environment" is a pocket folder of removable leaflets concerned with two major topics: Nuclear energy and Nuclear Techniques. Under Nuclear Energy, leaflets concerning the topics of "Radiation--A Fact of Life,""The Impact of a Fact: 1963 Test Ban Treaty,""Energy Needs and Nuclear Power,""Power Reactor Safety,""Transport,"…

  9. Journalism and nuclear energy

    International Nuclear Information System (INIS)

    Mills, M.P.

    1987-01-01

    The question as to why nuclear energy is a point of friction between journalists and the expert community is discussed. The areas in which the two communities fail to communicate are highlighted and the opportunities that exist for improved nuclear journalism are identified briefly. (author)

  10. Nuclear energy related research

    International Nuclear Information System (INIS)

    Salminen, Pertti

    1989-03-01

    This annual Research Programme Plan covers the publicly funded nuclear energy related research planned to be carried out at the Technical Research Centre of Finland (VTT) in 1989. The research will be financed by the Ministry of Trade and Industry, the Finnish Centre for Radiation and Nuclear Safety, the Nordic Council of Ministers and VTT itself

  11. Nuclear energy and medicine

    International Nuclear Information System (INIS)

    1988-01-01

    The applications of nuclear energy on medicine, as well as the basic principles of these applications, are presented. The radiological diagnosis, the radiotherapy, the nuclear medicine, the radiological protection and the production of radioisotopes are studied. (M.A.C.) [pt

  12. Nuclear energy related research

    International Nuclear Information System (INIS)

    Salminen, P.; Mattila, L.

    1990-08-01

    The annual Research Programme Plan describes the publicly funded nuclear energy related research to be carried out at the Technical Research Centre of Finland (VTT) in 1990. The research is financed primarily by the Ministry of Trade and Industry (KTM), the Finnish Centre for Radiation and Nuclear Safety (STUK) and VTT itself. Utilities and industry also contribute to some projects

  13. Nuclear energy related research

    International Nuclear Information System (INIS)

    Mattila, L.; Vanttola, T.

    1991-10-01

    The annual Research Programme Plan describes the publicly funded nuclear energy related research to be carried out mainly at the Technical Research Centre of Finland (VTT) in 1991. The research is financed primarily by the Ministry of Trade and Industry (KTM), the Finnish Centre for Radiation and Nuclear Safety (STUK) and VTT itself. Other research institutes, utilities and industry also contribute to many projects

  14. Nuclear energy related research

    International Nuclear Information System (INIS)

    Rintamaa, R.

    1992-05-01

    The annual Research Programme Plan describes publicly funded nuclear energy related research to be carried out mainly at the Technical Research Centre of Finland (VTT) in 1992. The research is financed primarily by the Ministry of Trade and Industry (KTM), the Finnish Centre for Radiation and Nuclear Safety (STUK) and VTT itself. Other research institutes, utilities and industry also contribute to many projects

  15. Nuclear energy related research

    International Nuclear Information System (INIS)

    Salminen, P.

    1988-02-01

    This annual Research Programme Plan covers the publicly funded nuclear energy related research planned to be carried out at the Technical Research Centre of Finland (VTT) in 1988. The research will be financed by the Ministry of Trade and Industry, the Finnish Centre for Radiation and Nuclear Safety, the Nordic Council of Ministers and VTT itself

  16. Nuclear energy: a reassessment

    International Nuclear Information System (INIS)

    McClure, J.A.; Nader, R.; Udall, M.K.; Walske, C.

    1980-01-01

    This edited transcript of a televised American Enterprise Institute Public Poicy Forum explores the role of nuclear technology in energy production in the US today. A panel made up of Senator James A. McClure, Ralph Nader, Representative Morris K. Udall, and Dr. Carl Walske and moderated by John Charles Daly examines the lessons learned from the accident at the Three Mile Island Nuclear Plant and the public attitudes toward nuclear energy, particularly in light of this accident. The experts discuss alternative energy sources, such as coal, gas, biomass, and solar power as well as conservation and more efficient use of present facilities. The issues of nuclear waste disposal and transport and US commitments to countries not self-sufficient in their energy needs are also explored

  17. Nuclear energy in Europe

    International Nuclear Information System (INIS)

    Anon.

    1981-01-01

    A country by country study of nuclear energy in the various European countries: Austria, Belgium, Bulgaria, Czechoslovakia, Denmark, Federal German Republic, Finland, German Democratic Republic, Great Britain, Holland, Hungary, Italy, Poland, Rumania, Spain, Sweden, Switzerland, USSR and Yugoslavia [fr

  18. Desalting and Nuclear Energy

    Science.gov (United States)

    Burwell, Calvin C.

    1971-01-01

    Future use of nuclear energy to produce electricity and desalted water is outlined. Possible desalting processes are analyzed to show economic feasibility and the place in planning in world's economic growth. (DS)

  19. Breakup reactions at intermediate and high energy

    International Nuclear Information System (INIS)

    Shotter, A.C.; Bice, A.N.

    1981-01-01

    Having considered some general aspects of peripheral break-up reactions involving heavy ions for the incident energy range 10-2000 MeV/A, specific experiments carried out at Berkeley in 1980 in the energy range 10-20 MeV/A are discussed. These indicate that sequential break-up processes from non-sequential inelastic processes both play significant roles in the mechanism. (UK)

  20. Nuclear energy in Armenia

    International Nuclear Information System (INIS)

    Gevorgyan, S.; Kharazyan, V.

    2000-01-01

    This summary represents an overview of the energy situation in Armenia and, in particular, the nuclear energy development during the last period of time. the energy sector of Armenia is one of the most developed economy branches of the country. The main sources of energy are oil products, natural gas, nuclear energy, hydropower, and coal. In the period of 1985-1988 the consumption of these energy resources varied between 12-13 million tons per year of oil equivalent. Imported energy sources accounted for 96% of the consumption. During the period 1993-1995 the consumption dropped to 3 million tons per year. Electricity in Armenia is produced by three thermal, one nuclear, and two major hydroelectric cascades together with a number small hydro units. The total installed capacity is 3558 MW. Nuclear energy in Armenia began its development during the late 1960's. Since the republic was not rich in natural reserves of primary energy sources and the only domestic source of energy was hydro resource, it was decided to build a nuclear power plant in Armenia. The Armenian Nuclear Power Plant (ANPP) Unit 1 was commissioned in 1996 and Unit 2 in 1980. The design of the ANPP was developed in 1968-1969 and was based on the project of Units 3 and 4 of the Novovoronezh NPP. Both units of the plant are equipped with reactors WWER-440 (V -270) type, which are also in use in some power stations in Russian Federation, Bulgaria, and Slovakia. Currently in Armenia, 36% of the total electricity production is nuclear power electricity. (authors)

  1. Nuclear energy and information

    International Nuclear Information System (INIS)

    Chen Baisong

    1996-01-01

    The information tells us that since the first chain reaction discovery about 50 years ago up to now, there are more than 400 commercial nuclear power plants connected to electricity supply net works. The electricity supplied by nuclear power plants has exceeded 2000 TWH, which represents almost 17% of the total electricity generated in the world and this proportion is still increasing. The accumulated operating experience of nuclear power plants reach more than 6000 reactor-year. Quite high average life time energy availability factors demonstrate the good reliability of nuclear power plants. The present status of the electricity development in the world shows that nuclear power has become an imperative and exclusively realistic alternative energy source. All of these information demonstrate that nuclear power as a safe, clean and less cost power source has already been widely accepted in the world. In Asia and Pacific region, the fast development of economy provides a vast possibility for the development of nuclear power. In China, shortage of electricity has become the 'bottle neck' which retards the economic development nowadays. China has already drawn up the plan for the development of nuclear power. The information is of great significance to promote the development of nuclear power. It could be said that without information, nuclear power could not be smoothly introduced in any country or region. (J.P.N.)

  2. Positron scattering by atomic hydrogen at intermediate energies

    International Nuclear Information System (INIS)

    Higgins, K.; Burke, P.G.; Walters, H.R.J.

    1990-01-01

    Results of an accurate calculation based upon the intermediate energy R-matrix theory are reported for elastic scattering of positrons by atomic hydrogen. T-matrix elements for both low and intermediate energy scattering are evaluated for the S e , P o , D e and F o partial wave symmetries. The low-energy elastic phaseshifts are found to be in good agreement with previous accurate variational calculations. Using an optical potential approach to include the effect of the higher partial waves, elastic and total cross sections are presented for energies ranging from near threshold to 3.7 Rydbergs. (author)

  3. That compromising nuclear energy

    International Nuclear Information System (INIS)

    Mink, E.

    1981-01-01

    This book discusses a wide range of aspects of nuclear energy and its problems. Social and ideological as well as more technical sides of the nuclear controversy are dealt with. The author argues that just more information on the subject cannot solve the problem anyhow, as technologists naively hold. Being a christian, the author believes that the Bible can show us a way out, even as to these energy problems. (G.J.P.)

  4. Risk communication: Nuclear energy

    International Nuclear Information System (INIS)

    Peters, H.P.

    1991-01-01

    The emphasis is put on communication processes, here in particular with regard to nuclear energy. Not so much dealt with are questions concerning political regulation, the constellation of power between those becoming active and risk perception by the population. Presented are individual arguments, political positions and decision-making processes. Dealt with in particular are safety philosophies, risk debates, and attempts to 'channel' all sides to the subject of nuclear energy. (DG) [de

  5. Deliberations about nuclear energy

    International Nuclear Information System (INIS)

    Boskma, P.; Smit, W.A.; Vries, G.H. de; Dijk, G. van; Groenewold, H.J.; Jelsma, J.; Tans, P.P.; Doorn, W. van

    1975-01-01

    This report is a discussion of points raised in three safety studies dealing with nuclear energy. It reviews the problems that must be faced in order to form a safe and practical energy policy with regard to health and the environment (potential hazards, biological effects and radiation dose norms), the proliferation of nuclear weapons, reactor accidents (including their causes, consequences and evacuation problems that arise), the fallout and contamination problems, and security (both reactor security and national security)

  6. Central collisions in intermediate energy heavy-ion reactions

    International Nuclear Information System (INIS)

    Wong, C.Y.

    1979-01-01

    The critical collisions in intermediate energy heavy-ion reactions are examined from both a microscopic and macroscopic viewpoint. In the microscopic description the proper tool is the extended TDHF approximation involving both the mean field and the particle collisions. To understand the underlying physics, the effect of the mean field and the effect of particle collisions are studied separately. It is found that th sudden increase in the density of the overlapping region can cause the volcano effect, leading to the complete disintegration of one of the nuclei. The self-consistent mean field also gives rise to the bunching instability when the two Fermi spheres of the colliding nucleons separate. The collision between nucleons, on the other hand, leads to irreversible dissipation, thermalization, and the possibility of a hydrodynamical description of the dynamics. Next is studied the dynamics of central collisions using the hydrodynamical description for many combinations of targets and projectiles at different energies. The formation of shock waves, sidesplash, and the complete disintegration of the whole nucleus are examined. Nuclear viscosity is found to affect the angular distribution of the reaction products and also the maximum compression ratio achieved during the collision. 28 references

  7. Nuclear energy outlook 2008

    International Nuclear Information System (INIS)

    2008-01-01

    With the launch today of its first Nuclear Energy Outlook, the OECD Nuclear Energy Agency (NEA) makes an important contribution to ongoing discussions of nuclear energy's potential role in the energy mixes of its member countries. As world energy demand continues to grow unabated, many countries face serious concerns about the security of energy supplies, rising energy prices and climate change stemming from fossil fuel consumption. In his presentation, the NEA Director-General Luis Echavarri is emphasizing the role that nuclear power could play in delivering cost-competitive and stable supplies of energy, while also helping to reduce greenhouse gas emissions. In one Outlook scenario, existing nuclear power technologies could provide almost four times the current supply of nuclear-generated electricity by 2050. Under this scenario, 1400 reactors of the size commonly in use today would be in operation by 2050. But in order to accomplish such an expansion, securing political and societal support for the choice of nuclear energy is vital. An ongoing relationship between policy makers, the nuclear industry and society to develop knowledge building and public involvement will become increasingly important, the publication notes. Moreover, governments have a clear responsibility to maintain continued effective safety regulation, advance efforts to develop radioactive waste disposal solutions and uphold and reinforce the international non-proliferation regime. The authors find that the security of energy from nuclear power is more reliable than that for oil or gas. Additionally, uranium's high energy density means that transport is less vulnerable to disruption, and storing a large energy reserve is easier than for fossil fuels. One tonne of uranium produces the same energy as 10 000 to 16 000 tonnes of oil using current technology. Ongoing technological developments are likely to improve that performance even more. Until the middle of the century the dominant reactor

  8. (p,n) reaction at intermediate energy

    International Nuclear Information System (INIS)

    Goodman, C.D.

    1979-01-01

    The use of the (p,n) reaction in exploring effective interactions is reviewed. Some recent data on self-conjugate nuclei taken at the Indiana University Cyclotron Facility (IUCF) are presented, and the differences between low- and high-energy data are emphasized. Experimental problems and techniques used are briefly described. It is concluded that forward-angle (p,n) spectra at energies greater than 100 MeV are dominated by Gamow-Teller (GT) transitions, while Fermi transitions (IAS transitions) dominate near 45 MeV. Prominent GT transitions are expected from a pion-exchange interaction, and it is expected that OPEP is the dominant component of the interaction in the energy range of 100 to 200 MeV. 27 figures, 2 tables

  9. Breakup of loosely bound nuclei at intermediate energies for nuclear astrophysics and the development of a position sensitive microstrip detector system and its readout electronics using ASICs technologies

    Energy Technology Data Exchange (ETDEWEB)

    Bertulani, Carlos A. [Texas A & M Univ., Commerce, TX (United States)

    2016-01-12

    The work performed under this grant has led to the development of a detection system that will be used to measure reaction rates for proton or neutron capture reactions at stellar energies on radioactive ions far from stability. The reaction rates are needed to better understand the physics of nucleosynthesis in explosive stellar processes such as supernovae and x-ray burst events. The radioactive ions will be produced at the Radioactive Ion Beam Facility (RIBF) at RIKEN near Tokyo, Japan. During the course of this work, the group involved in this project has expanded by several institutions in Europe and Japan and now involves collaborators from the U.S., Japan, Hungary, Romania, Germany, Spain, Italy, China, and South Korea. As part of the project, a novel design based on large-area silicon detectors has been built and tested. The work has involved mechanical construction of a special purpose vacuum chamber, with a precision mounting system for the silicon detectors, development of a new ASICs readout system that has applications with a wide variety of silicon detector systems, and the development of a data acquisition system that is integrated into the computer system being used at RIBF. The parts noted above that are needed to carry out the research program are completed and ready for installation. Several approved experiments that will use this system will be carried out in the near future. The experimental work has been delayed due to a large increase in the cost and availability of electrical power for RIBF that occurred following the massive earthquake and tsunami that hit Japan in the spring of 2011. Another component of the research carried out with this grant involved developing the theoretical tools that are required to extract the information from the experiments that is needed to determine the stellar reaction rates. The tools developed through this part of the work will be made freely available for general use.

  10. Pion- and proton-nucleus interactions at intermediate energy

    International Nuclear Information System (INIS)

    Dehnhard, D.

    1992-12-01

    We report on scattering and reaction experiments on light nuclei using the π-meson and proton beams from the Los Alamos Meson Physics Facility (LAMPF) and the Indiana University Cyclotron Facility (IUCF). Differential cross sections, cross section asymmetries, and angular correlation functions have been measured in order to test models of the reaction mechanism and of nuclear structure. At LAMPF we have measured asymmetries for pion scattering from polarized 13 C which are uniquely sensitive to the isoscalar spin density. In order to determine details of the reaction mechanism, we have obtained approval for a scattering experiment on polarized 3 He for which the nuclear structure is very well known. We have completed data taking for two studies of elastic scattering of π + from 6 Li and l3 C. The detailed differential cross sections from these experiments will be used to constrain theoretical analyses of previous polarization experiments done at the Pierre-Scherrer-Institute (PSI) and at LAMPF. We have analyzed π-triton coincidence events from the 4 He(π,π' t)p reaction and have found evidence for direct triton knockout from 4 He. We have extended these angular correlation measurements to higher energies and to 2 H and 3 He targets. At IUCF we have performed the first 4 He(p,n) experiment at intermediate energies, T p = 100, 147, and 200 MeV, in a search for previously reported narrow states in 4 Li of widths of ∼ 1 MeV. Within the statistics of the data we have found no evidence for such narrow structures

  11. Negotiating comfort in low energy housing: The politics of intermediation

    International Nuclear Information System (INIS)

    Grandclément, Catherine; Karvonen, Andrew; Guy, Simon

    2015-01-01

    Optimising the energy performance of buildings is technically and economically challenging but it also has significant social implications. Maintaining comfortable indoor conditions while reducing energy consumption involves careful design, construction, and management of the built environment and its inhabitants. In this paper, we present findings from the study of a new low energy building for older people in Grenoble, France where conflicts emerged over the simultaneous pursuit of energy efficiency and comfort. The findings contribute to the contemporary literature on the sociotechnical study of buildings and energy use by focusing on intermediation, those activities that associate a technology to end users. Intermediation activities take many forms, and in some cases, can result in the harmonisation or alignment of energy efficiency goals and comfort goals. In other cases, intermediation is unsuccessful, leading to the conventional dichotomy between optimising technical performance and meeting occupant preferences. By highlighting the multiple ways that comfort and energy efficiency is negotiated, we conclude that buildings are provisional achievements that are constantly being intermediated. This suggests that building energy efficiency policies and programmes need to provide opportunities for intermediaries to negotiate the desires and preferences of the multiple stakeholders that are implicated in low energy buildings. -- Highlights: •Energy efficiency and comfort are two possibly contradictory aims of buildings. •We study the pursuit of these aims at the occupation stage of a new building. •Aligning these aims involve negotiating them with occupants. •Intermediation processes are key to such negotiations. •Intermediation processes involve both actors and technical devices

  12. Breakup of loosely bound nuclei at intermediate energies for nuclear astrophysics and the development of a position sensitive microstrip detector system and its readout electronics using ASICs technologies

    Energy Technology Data Exchange (ETDEWEB)

    Tribble, Robert E. [Texas A & M Univ., College Station, TX (United States); Sobotka, Lee G. [Washington Univ., St. Louis, MO (United States); Blackmon, Jeff C. [Louisiana State Univ., Baton Rouge, LA (United States); Bertulani, Carlos A. [Texas A & M Univ., Commerce, TX (United States)

    2015-12-29

    The work performed under this grant has led to the development of a detection system that will be used to measure reaction rates for proton or neutron capture reactions at stellar energies on radioactive ions far from stability. The reaction rates are needed to better understand the physics of nucleosynthesis in explosive stellar processes such as supernovae and x-ray burst events. The radioactive ions will be produced at the Radioactive Ion Beam Facility (RIBF) at RIKEN near Tokyo, Japan. During the course of this work, the group involved in this project has expanded by several institutions in Europe and Japan and now involves collaborators from the U.S., Japan, Hungary, Romania, Germany, Spain, Italy, China, and South Korea. As part of the project, a novel design based on large-area silicon detectors has been built and tested and the performance characterized in a series of tests using particle beams with a variety of atomic numbers at the Cyclotron Institute of Texas A&M University and the Heavy Ion Medical Accelerator in Chiba facility (HIMAC) in Chiba, Japan. The work has involved mechanical construction of a special purpose vacuum chamber, with a precision mounting system for the silicon detectors, development of a new ASICs readout system that has applications with a wide variety of silicon detector systems, and the development of a data acquisition system that is integrated into the computer system being used at RIBF. The parts noted above that are needed to carry out the research program are completed and ready for installation. Several approved experiments that will use this system will be carried out in the near future. The experimental work has been delayed due to a large increase in the cost and availability of electrical power for RIBF that occurred following the massive earthquake and tsunami that hit Japan in the spring of 2011. Another component of the research carried out with this grant involved developing the theoretical tools that are required

  13. Nuclear energy in Korea

    International Nuclear Information System (INIS)

    Ahn, J.-H.

    2000-01-01

    The total electricity generated in 1998 was 215,300 GWh with 43,261 MWe of total installed capacity of electric power, while in 1978 when the first Nuclear Power Plant began operation it was 31,510 GWh with 6,916 MWe installed capacity. The share of nuclear power generation in 1998 increased up to 41.7%. Currently, 16 units of nuclear power are operating with an additional four units under construction. Nuclear power has contributed to enhancing energy security and supplying stable energy for Korea. The government's strong commitment to the nuclear power program together with a long-term national policy resulted in favorable conditions for KEPCO to manage the program and promote increasing levels of national participation in successive nuclear power projects. The role of nuclear power as a sustainable energy resource can not be emphasized enough with respect to global environmental issues. Increasing the share of nuclear power in the total installed capacity for electricity generation will undoubtedly play a very important role. (author)

  14. Intermediate energy proton scattering from 10B

    International Nuclear Information System (INIS)

    Lewis, P.R.; Shute, G.G.; Spicer, R.S.; Henderson, R.S.

    1990-01-01

    Differential cross sections have been measured for 200 MeV proton scattering from 10 B. Data for six low lying natural parity levels below 6 MeV excitation energy are presented. Distorted wave analysis using a density dependent nucleon-nucleon interaction has assessed model spectroscopies of these excited states. The significance of the contribution from quadrupole scattering to the elastic cross section is discussed. 49 refs., 5 tabs., 21 figs

  15. Nuclear energy and the nuclear industry

    International Nuclear Information System (INIS)

    1979-01-01

    These notes have been prepared by the Department of Energy to provide information and to answer questions often raised about nuclear energy and the nuclear industry and in the hope that they will contribute to the public debate about the future of nuclear energy in the UK. The subject is dealt with under the headings; contribution of nuclear power, energy forecasts, nuclear fuels and reactor types, cost, thermal reactor strategy, planning margin, safety, nuclear licensing, unlike an atomic bomb, radiation, waste disposal, transport of nuclear materials, emergency arrangements at nuclear sites, siting of nuclear stations, security of nuclear installations, world nuclear programmes, international regulation and non-proliferation, IAEA safeguards arrangements in the UK, INFCE, and uranium supplies. (U.K.)

  16. Nuclear energy and the environment

    International Nuclear Information System (INIS)

    El-Hinnawi, E.E.

    1980-01-01

    Chapters are presented concerning the environmental impact of mining and milling of radioactive ores, upgrading processes, and fabrication of nuclear fuels; environmental impacts of nuclear power plants; non-radiological environmental implications of nuclear energy; radioactive releases from nuclear power plant accidents; environmental impact of reprocessing; nuclear waste disposal; fuel cycle; and the future of nuclear energy

  17. Nuclear energy terms

    Energy Technology Data Exchange (ETDEWEB)

    1976-01-01

    This is an English-Afrikaans / Afrikaans-English dictionary compiled by the Technical Language Committee of the Atomic Energy Board in collaboration with the Vaktaalburo of the Suid-Afrikaanse Akademie vir Wetenskap en Kuns containing 8515 terms on nuclear energy.

  18. Nuclear energy terms

    International Nuclear Information System (INIS)

    1976-01-01

    This is an English-Afrikaans / Afrikaans-English dictionary compiled by the Technical Language Committee of the Atomic Energy Board in collaboration with the Vaktaalburo of the Suid-Afrikaanse Akademie vir Wetenskap en Kuns containing 8515 terms on nuclear energy

  19. Innovative spin precessor for intermediate energy protons

    International Nuclear Information System (INIS)

    Hoffman, E.W.

    1979-01-01

    A spin precessor has been designed to provide arbitrary orientation of the polarization in the external proton beam at LAMPF. The device utilizes two superconducting solenoids, three conventional dipoles, and conversion of polarized H - to H + to provide an achromatic, undeflected beam with tunable spin orientation over a range of energies from 400 MeV to 800 MeV. A portion of this device is being installed to provide compatibility between two facilities which simultaneously use two branches of the external proton beam at LAMPF

  20. Nuclear energy versus coal

    International Nuclear Information System (INIS)

    Storm van Leeuwen, J.W.

    1980-01-01

    An analysis is given of the consequences resulting from the Dutch government's decision to use both coal and uranium for electricity production. The energy yields are calculated for the total conversion processes, from the mine to the processing of waste and the demolition of the installations. The ecological aspects considered include the nature and quantity of the waste produced and its effect on the biosphere. The processing of waste is also considered here. Attention is given to the safety aspects of nuclear energy and the certainties and uncertainties attached to nuclear energy provision, including the value of risk-analyses. Employment opportunities, the economy, nuclear serfdom and other social aspects are discussed. The author concludes that both sources have grave disadvantages and that neither can become the energy carrier of the future. (C.F.)

  1. Parliament and nuclear energy

    International Nuclear Information System (INIS)

    Laermann, K.H.

    1993-01-01

    The paper provides a historical review of the behaviour of Parliament in the discussion about utilizing nuclear energy. An analysis of the positions taken and reasons advanced so far is necessary, because it is only from its results that promising strategies appropriate to bring about a consensus can be derived. There is no doubt that it is a genuine task of the democratically legitimated bodies to strive for a consensus in energy policy, in particular nuclear energy, in the interest of the whole State, with the legislative, executive and economic bodies combining their efforts. The reservedness of Parliament is regrettable. At the moment, however, there is the positive effect of the discussion being revived. It should be conducted rationally in the joint interest of reaching a political consensus and, on that basis, a broad acceptance of nuclear energy utilization. (orig./HSCH) [de

  2. Nuclear energy and society

    International Nuclear Information System (INIS)

    Baiquni, A.

    1982-01-01

    A great deal of energy will be needed for industrial development. The risks of energy production can be either individual or social in nature. Individual risk occurs in different places and different times to individuals in a certain period of time. Social risk occurs to several people in a time. People tend to refuse a nuclear power plant because of its social risk. This attitude is based more on feelings than reason. In fact radiation from a nuclear power plant is only 0.15% while radiation from medical instruments and from the environment is 99%. From the safety, pollution effect, price, and uses point of view, it can be concluded that nuclear energy is the most appropriate energy to face the future of the nation. (RUW)

  3. World nuclear energy paths

    International Nuclear Information System (INIS)

    Connolly, T.J.; Hansen, U.; Jaek, W.; Beckurts, K.H.

    1979-01-01

    In examing the world nuclear energy paths, the following assumptions were adopted: the world economy will grow somewhat more slowly than in the past, leading to reductions in electricity demand growth rates; national and international political impediments to the deployment of nuclear power will gradually disappear over the next few years; further development of nuclear power will proceed steadily, without serious interruption but with realistic lead times for the introduction of advanced technologies. Given these assumptions, this paper attempts a study of possible world nuclear energy developments, disaggregated on a regional and national basis. The scenario technique was used and a few alternative fuel-cycle scenarios were developed. Each is an internally consistent model of technically and economically feasible paths to the further development of nuclear power in an aggregate of individual countries and regions of the world. The main purpose of this modeling exercise was to gain some insight into the probable international locations of reactors and other nuclear facilities, the future requirements for uranium and for fuel-cycle services, and the problems of spent-fuel storage and waste management. The study also presents an assessment of the role that nuclear power might actually play in meeting future world energy demand

  4. Nuclear structure studies at intermediate energies

    International Nuclear Information System (INIS)

    Hintz, N.M.

    1990-07-01

    This report discusses the following topics: Search for dibaryon resonances; analysis of 208 Pb(π ± ,π ± ) data; analysis of 206,207,208 Pb(p,p') data; study of transition nuclei by (p,p'); search for recoil free δ-production; search for low lying magnetic states; proton nucleus scattering and swelling of nucleons; measurement of spin observables in 28 Si(p,p'); strength of tensor force in nuclei; global analysis of (p,p') reactions to high spin states in 28 Si and 58 Ni and density dependent modifications; MRS Setup and development; and development of coincidence studies with the MRS

  5. [Intermediate/high energy nuclear physics

    International Nuclear Information System (INIS)

    1989-01-01

    We have continued to develop a theoretical framework for the quark and gluon structure of nuclei. Our approach features a successful phenomenological model, the quark cluster model (QCM), and an ambitious program in the non-perturbative solution of quantum field theories. The effort in quantum field theory provides theoretical results to test or replace assumed ingredients of the QCM. Our primary emphasis in field theory continues to be the solution of non-perturbative problems. Two prominent examples are the development and solution of relativistic two-body wave equations for bound states and resonances and the development of methods for solving field theories via light-front quantization which include the treatment of a dynamical vacuum. An important spin-off from the relativistic two-body wave equation effort has been the solution of QED for electron-positron scattering which is complete through the order of one-photon exchange. Resonances are obtained which are in accord with the electron-positron peaks observed in the GSI heavy-ion experiments. In discovering this resonance phenomena we have uncovered a new scale for phenomena within QED. Although we have much progress to report, many outstanding problems remain. We propose a strong effort in the direction of eventually solving relativistic three-body wave equations for a model of the baryons. We also propose to continue our efforts to develop nonperturbative methods to solve quantum field theories with fermions both on the light-front and with equal time quantization

  6. Intermediate/high energy nuclear physics

    International Nuclear Information System (INIS)

    1991-01-01

    This progress report discusses: the quark cluster model; solving quantum field theories in non-perturbative regime; relativistic wave equations, quarkonia and e + e - resonances; thermal properties of nuclei; and relativistic heavy ions and other projects

  7. Freedom from nuclear energy myth

    International Nuclear Information System (INIS)

    Kim, Wonsik

    2001-09-01

    This book generalizes the history of nuclear energy with lots of myths. The contents of this book are a fundamental problem of nuclear power generation, the myth that nuclear energy is infinite energy, the myth that nuclear energy overcomes the crisis of oil, the myth that nuclear energy is cheap, safe and clean, the myth that nuclear fuel can be recycled, the myth that nuclear technology is superior and the future and present of nuclear energy problem related radiation waste and surplus of plutonium.

  8. Nuclear Energy in Romania

    International Nuclear Information System (INIS)

    Biro, L.

    2003-01-01

    The new energy approach towards nuclear, due to the growing political support at the beginning of this century, is the result of a complexity of economical, social, political and technological factors. The history of peaceful use of nuclear energy in Romania goes back 45 years. Considering the strategic importance of the energy sector in developing the national economy on sustainable basis, the sector evolution should be outlined through prognosis and strategies on different horizons of time, so that the development perspectives and the energy supply to be correctly estimated. This necessity is emphasized in the Governmental Program of the present administration, which takes into consideration Romanian Economic Strategy on medium term and also The Government Action Plan on 2000-2004, agreed with the European Commission. In order to implement the Governmental Program, the Ministry of Industries and Resources elaborates the National Energy Strategy. The Government Action Plan draw up the conclusion that Unit 2 from Cernavoda NPP must be finalized. This solution fits the least-cost energy development planning and answers to environment requirements. Romania became a Member State of the Agency in 1957. From the mid-1960s to the mid-1970s its technical co-operation program with the Agency covered mainly research in nuclear physics and some medical and other applications of radiation and isotopes. Since 1976, when the Romanian nuclear power program was embarking to use CANDU-type reactors, the Agency has supported mainly the activities related to the Cernavoda NPP. In the framework of the Romanian accession process to the European structures, CNCAN co-operates with European Commission for transposition of the communautaire acquis in the field of nuclear activities. Romania has had laws in place governing the regulation of nuclear activities since 1974. They were remained in force throughout and subsequent to the national constitutional changes started in 1989 until 1996

  9. Nuclear energy is promising

    International Nuclear Information System (INIS)

    Spitz, H.

    2000-02-01

    This document summarizes the different talks given by the participants to the winter meeting on nuclear energy which took place in Germany on January 27 and 28 2000. Representatives of the following companies and organisations attended the meeting: Deutsches Atomforum e.V., Bayernwerk AG, IG Bergau, Chemie und Energie, Siemens AG - energy production, VEBA AG and one public opinion poll institute. (J.S.)

  10. Nuclear hybrid energy infrastructure

    Energy Technology Data Exchange (ETDEWEB)

    Agarwal, Vivek; Tawfik, Magdy S.

    2015-02-01

    The nuclear hybrid energy concept is becoming a reality for the US energy infrastructure where combinations of the various potential energy sources (nuclear, wind, solar, biomass, and so on) are integrated in a hybrid energy system. This paper focuses on challenges facing a hybrid system with a Small Modular Reactor at its core. The core of the paper will discuss efforts required to develop supervisory control center that collects data, supports decision-making, and serves as an information hub for supervisory control center. Such a center will also be a model for integrating future technologies and controls. In addition, advanced operations research, thermal cycle analysis, energy conversion analysis, control engineering, and human factors engineering will be part of the supervisory control center. Nuclear hybrid energy infrastructure would allow operators to optimize the cost of energy production by providing appropriate means of integrating different energy sources. The data needs to be stored, processed, analyzed, trended, and projected at right time to right operator to integrate different energy sources.

  11. Nuclear energy and insurance

    International Nuclear Information System (INIS)

    Ekener, H.

    1997-01-01

    It examines the technical, scientific and legal issues relating to the peaceful use of atomic energy in Turkey. The first fifteen chapters give a general overview of the atom and radioactivity; the chapters which follow this section are more technical and deal with the causes of nuclear accidents in reactors.A number of chapters cover legal issues, for example the conditions and procedures involved in the insurance market and the risks linked to operation of a nuclear power plant.The following subjects are examined in relation to nuclear insurance: risks during construction; fire during operation of the plants and other causes of accidents; risks due to the transport of radioactive materials and waste etc. The final chapters reproduce the principle legislative texts in force in Turkey in the field of nuclear energy, and also certain regulations which establish competent regulatory bodies

  12. Light fragment formation at intermediate energies

    International Nuclear Information System (INIS)

    Boal, D.H.

    1982-03-01

    This paper concerns itself mainly with the production of energetic protons and light fragments at wide angles. The experiments point to nucleon emission in proton-induced reactions as involving a mechanism in which the observed nucleon is directly knocked out of the nucleus. A similar feature seems to be required to explain (p,F) and (e,F) reactions: an energetic nucleon is produced in one scattering of the projectile, and the struck nucleon subsequently loses some of its energy as it traverses the remaining part of the nucleus, gathering up other nucleons as it goes, to become a fragment. This is what one might call the extreme snowball model, and a more accurate description probably involves multiple scattering of the projectile in addition to the extreme snowball contribution. This will be particularly true for fragments in the mass 6 to 9 region. This scenario also appears to apply to deuteron-induced fragment production. However, for alpha-induced reactions it would appear that the nucleons forming a fragment can originate from collisions involving different incident nucleons in the projectile. For heavy ions, this effect is even stronger, and the snowball contribution is greatly reduced compared to that of the traditional coalescence model

  13. Energy supply and nuclear energy

    International Nuclear Information System (INIS)

    Heitzer, H.

    1977-01-01

    The author emphasizes the necessity and importance of nuclear energy for the energy supply and stresses the point that it is extremely important to return to objective arguments instead of having emotional disputes. In this connection, it would be necessary for the ministries in question to have clear-cut political responsibility from which, under no circumstances, they may escape, and which they cannot pass on to the courts either. Within the framework of listing present problems, the author is concerned with the possibility of improved site planning, the introduction of a plan approval procedure and questions concerning immediately enforceable nuclear licences. He also deals with a proposal, repeatedly made, to improve nuclear licensing procedures on the one hand by introducing a project-free site-appointment procedure, and on the other hand by introducing a simplified licensing procedure for facilities of the same kind. Splitting the procedure into site and facility would make sense solely for the reason that in many cases the objections are, above all, directed against the site. (HP) [de

  14. Alternatives to nuclear energy

    International Nuclear Information System (INIS)

    Terrado, E.N.

    1981-01-01

    This article discusses several possibilities as alternatives to nuclear energy and their relevance to the Philippine case. The major present and future fuel alternatives to petroleum and nuclear energy are coal, geothermal heat, solar energy and hydrogen, the first two of which are being used. Different conversion technologies are also discussed for large scale electricity production namely solar thermal electric conversion (STC), photovoltaic electric power system (PEPS) and ocean thermal energy conversion (OTEC). Major environmental considerations affect the choice of energy sources and technologies. We have the problem of long term accumulation of radioactive waste in the case of nuclear energy; in geothermal and fossil-fuels carbon dioxide uranium and accumulation may cause disastrous consequences. With regard to Philippine option, the greatest considerations in selecting alternative energy options would be resources availability - both energy and financial and technology status. For the country's energy plan, coal and geothermal energy are expected to play a significant role. The country's coal resources are 1.4 billion metric tons. For geothermal energy, 25 volcanic centers were identified and has a potential equivalent to 2.5 x 10 6 million barrels of oil. Solar energy if harnessed, being in the sunbelt, averaging some 2000 hours a year could be an energy source. The present dilemma of the policy maker is whether national resources are better spent on large scale urban-based energy projects or whether those should be focused on small scale, rural oriented installations which produced benefits to the more numerous and poorer members of the population. (RTD)

  15. Intermediate-energy neutron beam for NCT at MURR

    International Nuclear Information System (INIS)

    Brugger, R.M.; Less, T.J.; Passmore, G.G.

    1986-01-01

    The University of Missouri Research Reactor (MURR) is one of the high-flux reactors in the USA and it can be used to produce an intense beam of intermediate-energy neutrons for neutron capture therapy. Two methods are being evaluated at MURR to produce such a beam. The first uses a moderator of Al 2 O 3 replacing part of the graphite and water on one side of the core of the reactor to produce a source of predominantly intermediate-energy neutrons. The second method is a filter of 238 U between the core and the patient position to pass only intermediate-energy neutrons. The results of these evaluations are presented in this paper along with an outline of the other resources at the University of Missouri-Columbia that are available to support an NCT program. 4 references, 7 figures, 1 table

  16. Microdosimetry of intermediate energy neutrons in fast neutron fields

    International Nuclear Information System (INIS)

    Saion, E.B.; Watt, D.E.

    1988-01-01

    A coaxial double cylindrical proportional counter has been constructed for microdosimetry of intermediate energy neutrons in mixed fields. Details are given of the measured gas gain and resolution characteristics of the counter for a wide range of anode voltages. Event spectra due to intermediate neutrons in any desired energy band is achieved by an appropriate choice of thickness of the common dividing wall in the counter and by appropriate use of the coincidence, anticoincidence pulse counting arrangements. Calculated estimates indicate that the dose contribution by fast neutrons to the energy deposition events in the intermediate neutron range may be as large as 25%. Empirical procedures being investigated aim to determine the necessary corrections to be applied to the microdose distributions, with a precision of 10%. (author)

  17. Nuclear energy and environment

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1991-12-31

    The film stresses that a drastic reduction in carbon dioxide emissions, mainly from the burning of fossil fuels, must be achieved to limit a dangerous concentration of greenhouse gases in the atmosphere. It compares the environmental costs of different energy sources, in particular the wastes of a coal-fired versus a nuclear plant, and mentions the measures taken to reinforce protection against the risk of nuclear accidents

  18. Teachers and nuclear energy

    International Nuclear Information System (INIS)

    1994-01-01

    The aims of the seminar were: to exchange national experience in informing and assisting teachers in the nuclear field, and to determine the conditions for improving the effectiveness of these programmes; to develop an international understanding on the basic training and information requirements to assist secondary-school teachers in discussing nuclear energy in an appropriately wide and balanced context at school; to study the respective contributions of national authorities, industry and relevant institutes in this endeavour

  19. International nuclear energy guide

    International Nuclear Information System (INIS)

    Anon.

    1978-01-01

    The aim of this French-English bilingual Guide is to present a synthesis embracing all the aspects and all the implications of the development of nuclear energy by situating it both within the French administrative and professional framework and in the world context. Special attention has been paid to the protection of man and the environment and to safety and security problems; most of the other questions -technological, economic, industrial- which arise at all points in the nuclear cycle. Teaching and research are outlined and a special appendix is devoted to nuclear information [fr

  20. Nuclear energy in Finland

    International Nuclear Information System (INIS)

    Kilpi, K.; Palmen, B.

    1983-01-01

    Finland currently generates about 40% of its electricity from nuclear power. This achievement of worldwide record magnitude is based on long-lasting efforts to build and maintain the competent infrastructure and close international cooperation required by this demanding technology. This booklet published by the Finnish Atomic Energy Commission gives an overview of nuclear energy and related organizations in Finland. It describes the utility companies and nuclear power production, the manufacturing industry and its export potential, research and educational activities and the legal framework and authorities for nuclear safety and administration. International cooperation has been essential for Finland in developing its nuclear energy capacity and appreciation is espressed to many countries and international organizations which have contributed to this. At the same time Finnish organizations are willing to share the experiences and know-how they have gained in building nuclear power in a small country. This is a road which will be followed by many other countries in the decades to come. It is hoped that this booklet will also help to open new channels of cooperation in such efforts

  1. French nuclear energy policy

    International Nuclear Information System (INIS)

    Ferrari, A.; Bertel, E.

    1980-11-01

    The French energy policy is supported by a lucid view of the situation of our country and the constraints linked to the international context. This statement implies, the definition of a French policy or energy production essentially based on national resources, uranium, and especially for long term, technical know how which allows using plutonium in breeder reactors. This policy implies an effort in R and D, and industrial development of nuclear field, both in reactor construction and at all levels of fuel cycle. This coherent scientific and financial effort has been pursued since the beginning of years 60, and has placed France among the first nuclear countries in the world. Now this effort enables the mastership of a strong nuclear industry capable to assure the energy future of the country [fr

  2. Nuclear energy and development

    International Nuclear Information System (INIS)

    1991-01-01

    Today, about 80 developing countries are using nuclear techniques in various sectors of their national economies. In the sector of industry, the radiation processing using gamma rays of high energy electrons has grown. While in the sector of health care, an estimated 10000 gamma cameras-imaging instruments are used in combination with radioisotopes in medical diagnosis. In the field of agriculture there is, nearly, 1000 crop varieties derived from radiaton-induced mutations which are grown worldwide. Furthermore and concerning the energy sector there is 417 nuclear power plants operating in 26 countries, accounting for just 16% of the world's total electricity production; the nuclear energy helped in developing and supporting a variety of sciences. 2 tabs

  3. Nuclear energy and civilization

    International Nuclear Information System (INIS)

    Soentono, S.

    1996-01-01

    The role of energy is indeed very important since without it there will be no living-things in this world. A country's ability to cultivate energy determines the levels of her civilization and wealth. Sufficient energy supply is needed for economic growth, industrialization, and modernization. In a modern civilization, the prosperity and security of a country depends more on the capability of her people rather than the wealth of her natural resources. Energy supplies the wealth, prosperity and security, and sufficient reliable continuous supply of energy secures the sustainable development. The energy supply to sustain the development has to improve the quality of life covering also the quality of environment to support the ever increasing demand of human race civilization. Energy has a closer relationship with civilization in a modern society and will have to become even closer in the future more civilized and more modern society. The utilization of nuclear energy has, however, some problems and challenges, e.g. misleading information and understanding which need serious efforts for public information, public relation, and public acceptance, and possible deviation of nuclear materials for non-peaceful uses which needs serious efforts for technological and administrative barriers, precaution, prevention, safety, physical protection, safeguard, and transparency. These require cooperation among nuclear community. The cooperation should be more pronounced by heterogeneous growing Asian countries to reach harmony for mutual benefits toward better civilization. (J.P.N.)

  4. Singlet channel coupling in deuteron elastic scattering at intermediate energies

    International Nuclear Information System (INIS)

    Al-Khalili, J.S.; Tostevin, J.A.; Johnson, R.C.

    1990-01-01

    Intermediate energy deuteron elastic scattering is investigated in a three-body model incorporating relativistic kinematics. The effects of deuteron breakup to singlet spin intermediate states, on the elastic scattering observables for the 58 Ni(d vector, d) 58 Ni reaction at 400 and 700 MeV, are studied quantitatively. The singlet-breakup contributions to the elastic amplitude are estimated within an approximate two-step calculation. The calculation makes an adiabatic approximation in the intermediate states propagator which allows the use of closure over the np intermediate states continuum. The singlet channel coupling is found to produce large effects on the calculated reaction tensor analysing power A yy , characteristic of a dynamically induced second-rank tensor interaction. By inspection of the calculated breakup amplitudes we show this induced interaction to be of the T L tensor type. (orig.)

  5. Fission cross sections in the intermediate energy region

    International Nuclear Information System (INIS)

    Lisowski, P.W.; Gavron, A.; Parker, W.E.; Ullmann, J.L.; Balestrini, S.J.; Carlson, A.D.; Wasson, O.A.; Hill, N.W.

    1991-01-01

    Until recently there has been very little cross section data for neutron-induced fission in the intermediate energy region, primarily because no suitable neutron source has existed. At Los Alamos, the WNR target-4 facility provides a high-intensity source of neutrons nearly ideal for fission measurements extending from a fraction of a MeV to several hundred MeV. This paper summarizes the status of fission cross section data in the intermediate energy range (En > 30 MeV) and presents our fission cross section data for 235 U and 238 U compared to intranuclear cascade and statistical model predictions

  6. Fission cross sections in the intermediate energy region

    Energy Technology Data Exchange (ETDEWEB)

    Lisowski, P.W.; Gavron, A.; Parker, W.E.; Ullmann, J.L.; Balestrini, S.J. (Los Alamos National Lab., NM (USA)); Carlson, A.D.; Wasson, O.A. (National Inst. of Standards and Technology, Gaithersburg, MD (USA)); Hill, N.W. (Oak Ridge National Lab., TN (USA))

    1991-01-01

    Until recently there has been very little cross section data for neutron-induced fission in the intermediate energy region, primarily because no suitable neutron source has existed. At Los Alamos, the WNR target-4 facility provides a high-intensity source of neutrons nearly ideal for fission measurements extending from a fraction of a MeV to several hundred MeV. This paper summarizes the status of fission cross section data in the intermediate energy range (En > 30 MeV) and presents our fission cross section data for {sup 235}U and {sup 238}U compared to intranuclear cascade and statistical model predictions.

  7. The nuclear energy debate

    International Nuclear Information System (INIS)

    Rippon, S.

    1976-01-01

    With reference to the public discussion which is taking place at the moment concerning the future of nuclear energy in the UK, the document from the Advisory Council on Research and Development for Fuel and Power and also the report of the Royal Commission on Environmental Pollution are considered. Although there have been many other projections of UK and world energy requirements prepared by many different organisations, few cover such a wide range of scenarios in such detail as the ACORD report. The Royal Commission report contains many reassuring findings on the more extreme claims of the worldwide anti-nuclear movement, but one cannot read it without gaining the impression that the nuclear option is the energy source they would most like to do without. It is felt that against this background, it would seem to be time for the power industry to stop defending nuclear energy as an acceptable necessity and rather promoting it as the best energy option. (U.K.)

  8. The geometry of nuclear energy

    International Nuclear Information System (INIS)

    Robertson, J.A.L.

    1992-01-01

    In a personal assessment of the ethics of nuclear energy, the author challenges some of the conventional wisdom surrounding the subject, and concludes that for many applications nuclear energy is the energy source of ethical choice

  9. Sustainable thorium nuclear fuel cycles: A comparison of intermediate and fast neutron spectrum systems

    Energy Technology Data Exchange (ETDEWEB)

    Brown, N.R., E-mail: nbrown@bnl.gov [Brookhaven National Laboratory, Upton, NY (United States); Powers, J.J. [Oak Ridge National Laboratory, Oak Ridge, TN (United States); Feng, B.; Heidet, F.; Stauff, N.E.; Zhang, G. [Argonne National Laboratory, Argonne, IL (United States); Todosow, M. [Brookhaven National Laboratory, Upton, NY (United States); Worrall, A.; Gehin, J.C. [Oak Ridge National Laboratory, Oak Ridge, TN (United States); Kim, T.K.; Taiwo, T.A. [Argonne National Laboratory, Argonne, IL (United States)

    2015-08-15

    Highlights: • Comparison of intermediate and fast spectrum thorium-fueled reactors. • Variety of reactor technology options enables self-sustaining thorium fuel cycles. • Fuel cycle analyses indicate similar performance for fast and intermediate systems. • Reproduction factor plays a significant role in breeding and burn-up performance. - Abstract: This paper presents analyses of possible reactor representations of a nuclear fuel cycle with continuous recycling of thorium and produced uranium (mostly U-233) with thorium-only feed. The analysis was performed in the context of a U.S. Department of Energy effort to develop a compendium of informative nuclear fuel cycle performance data. The objective of this paper is to determine whether intermediate spectrum systems, having a majority of fission events occurring with incident neutron energies between 1 eV and 10{sup 5} eV, perform as well as fast spectrum systems in this fuel cycle. The intermediate spectrum options analyzed include tight lattice heavy or light water-cooled reactors, continuously refueled molten salt reactors, and a sodium-cooled reactor with hydride fuel. All options were modeled in reactor physics codes to calculate their lattice physics, spectrum characteristics, and fuel compositions over time. Based on these results, detailed metrics were calculated to compare the fuel cycle performance. These metrics include waste management and resource utilization, and are binned to accommodate uncertainties. The performance of the intermediate systems for this self-sustaining thorium fuel cycle was similar to a representative fast spectrum system. However, the number of fission neutrons emitted per neutron absorbed limits performance in intermediate spectrum systems.

  10. Sustainable thorium nuclear fuel cycles: A comparison of intermediate and fast neutron spectrum systems

    International Nuclear Information System (INIS)

    Brown, N.R.; Powers, J.J.; Feng, B.; Heidet, F.; Stauff, N.E.; Zhang, G.; Todosow, M.; Worrall, A.; Gehin, J.C.; Kim, T.K.; Taiwo, T.A.

    2015-01-01

    Highlights: • Comparison of intermediate and fast spectrum thorium-fueled reactors. • Variety of reactor technology options enables self-sustaining thorium fuel cycles. • Fuel cycle analyses indicate similar performance for fast and intermediate systems. • Reproduction factor plays a significant role in breeding and burn-up performance. - Abstract: This paper presents analyses of possible reactor representations of a nuclear fuel cycle with continuous recycling of thorium and produced uranium (mostly U-233) with thorium-only feed. The analysis was performed in the context of a U.S. Department of Energy effort to develop a compendium of informative nuclear fuel cycle performance data. The objective of this paper is to determine whether intermediate spectrum systems, having a majority of fission events occurring with incident neutron energies between 1 eV and 10 5 eV, perform as well as fast spectrum systems in this fuel cycle. The intermediate spectrum options analyzed include tight lattice heavy or light water-cooled reactors, continuously refueled molten salt reactors, and a sodium-cooled reactor with hydride fuel. All options were modeled in reactor physics codes to calculate their lattice physics, spectrum characteristics, and fuel compositions over time. Based on these results, detailed metrics were calculated to compare the fuel cycle performance. These metrics include waste management and resource utilization, and are binned to accommodate uncertainties. The performance of the intermediate systems for this self-sustaining thorium fuel cycle was similar to a representative fast spectrum system. However, the number of fission neutrons emitted per neutron absorbed limits performance in intermediate spectrum systems

  11. Nuclear energy and nuclear technology in Switzerland

    International Nuclear Information System (INIS)

    Graf, P.

    1975-01-01

    The energy crisis, high fuel costs and slow progress in the development of alternative energy sources, e.g. solar energy have given further impetus to nuclear power generation. The Swiss nuclear energy programme is discussed and details are given of nuclear station in operation, under construction, in the project stage and of Swiss participation in foreign nuclear stations. Reference is made to the difficulties, delays and resulting cost increases caused by local and regional opposition to nuclear power stations. The significant contributions made by Swiss industry and Swiss consulting engineers are discussed. (P.G.R.)

  12. Nuclear energy and communication

    International Nuclear Information System (INIS)

    1998-01-01

    This article contains information related to the support that the Latin-American countries have counted, from the International Atomic Energy Agency, for the development and application of the nuclear energy in different fields. In the particular case of Costa Rica, it mentions some projects included in the program ARCAL. The achievements reached in the year 1998 and the goals proposed for 1999-2000. (S. Grainger) [es

  13. High energy nuclear excitations

    International Nuclear Information System (INIS)

    Gogny, D.; Decharge, J.

    1983-09-01

    The main purpose of this talk is to see whether a simple description of the nuclear excitations permits one to characterize some of the high energy structures recently observed. The discussion is based on the linear response to different external fields calculated using the Random Phase Approximation. For those structure in heavy ion collisions at excitation energies above 50 MeV which cannot be explained with such a simple approach, we discuss a possible mechanism for this heavy ion scattering

  14. Vision of nuclear energy

    International Nuclear Information System (INIS)

    1987-01-01

    A study about the perspectives of nuclear energy, in Japan, for the next 40 years is shown. The present tendencies are analyzed as well as the importance that the subject adquires for the economy and the industry. At the same time, the parameters of the governmental, private and foreign participation are established in the frame of the technological development. The aim fixed for the year 2030 can be divided into; 1: from 1986 to 2010-development of the technology of nuclear fuel cycle already stablished and in process of maturity. The LWR technology will reach a very advanced stage. The fast breeder reactors (FBRs) will become commercially available, and the nuclear fuel cycle will reach its maturity in Japan; 2: from 2011 to 2030-commercial use of the FBRS and further advance in the nuclear fuel cycle. (M.E.L.) [es

  15. Nuclear energy related research

    International Nuclear Information System (INIS)

    Toerroenen, K.; Kilpi, K.

    1985-01-01

    This research programme plan for 1985 covers the nuclear energy related research planned to be carried out at the Technical Research Centre of Finland (VTT) and funded by the Ministry of Trade and Industry in Finland, the Nordic Council of Ministers and VTT

  16. Electron emission in collisions of intermediate energy ions with atoms

    International Nuclear Information System (INIS)

    Garibotti, C.R.

    1988-01-01

    The aim of this work, is the analysis of the processes of electronic emission produced in the collisions of small ions (H + , He ++ ) of intermediate energy (50 a 200 KeV/amu) with light gaseous targets. (A.C.A.G.) [pt

  17. Polarization phenomena in electromagnetic interactions at intermediate energies

    International Nuclear Information System (INIS)

    Burkert, V.

    1990-01-01

    Recent results of polarization measurements in electromagnetic interactions at intermediate energies are discussed. Prospects of polarization experiments at the new CW electron accelerators, as well as on upgraded older machines are outlined. It is concluded that polarization experiments will play a very important role in the study of the structure of the nucleon and of light nuclei. 72 refs

  18. The church and nuclear energy

    International Nuclear Information System (INIS)

    Phillips, G.O.

    1978-03-01

    The subject is covered in sections, entitled: foreword (explaining that report is a synopsis of the Hearing on Nuclear Energy arranged by the World Council of Churches, held in Sigtune, Sweden, June 24 to 29, 1975); humanity's energy needs); alternative sources of energy (nuclear fission, nuclear fusion, non-nuclear processes; some generalisations (concerning the advantages and disadvantages of nuclear energy to various sections of the world); what risks are acceptable (radiation hazards, reactor safety, radioactive wastes, misuse of Pu, safeguarding); nuclear weapons; nuclear energy - a challenge to the Churches; social and ethical issues; certain conclusions; postscript -the American move. (U.K.)

  19. Department of Nuclear Energy

    International Nuclear Information System (INIS)

    2002-01-01

    Full text: The activities of Department was engaged in the selected topics in nuclear fission reactor science and engineering. Present and future industry competitiveness, economic prosperity and living standards within the world are strongly dependent on maintaining the availability of energy at reasonable prices and with security of supply. Also, protection of man and the environment from the harmful effects of all uses of energy is an important element of the quality of life especially in Europe. It is unrealistic to assume that the technology for renewable (hydro, wind, solar and biomass) available within a 20-30 year perspective could provide the production capacity to replace present use of nuclear power and at the same time substantially reduce the use of fossil fuels, especially when considering that energy demand in industrialized countries can be expected to continue to increase even within a framework of overall energy conservation and continued improvement of efficiency in energy usage. In the area of nuclear fission, we continue support to maintain and develop the competence needed to ensure the safety of existing and future reactors and other nuclear installations. In addition support is given to explore the potential for improving present fission technology from a sustainable development point of view. The focus on advanced modelling of improved reactor and fuel cycle concepts, including supporting experimental research, with a view to improving the utilisation of the inherent energy content of uranium and other nuclear fuels, whilst at the same time reducing the amount of long-lived radioactive waste produced. A common scientific understanding of the frequently used concept of ''reasonable assurance of safety'' for the long-term, post-closure phase of repositories for spent fuel and high-level waste developed in order to ensure reasonably equivalent legal interpretations in environmental impact assessment and licensing procedures. Also, research is

  20. Systematics of elastic scattering at high and intermediate energy

    Energy Technology Data Exchange (ETDEWEB)

    Dias De Deus, J [Instituto de Fisica e Matematica, Lisboa (Portugal); Kroll, P [Wuppertal Univ. (Gesamthochschule) (Germany, F.R.)

    1977-01-01

    A model for elastic scattering valid in the intermediate and high-energy region is proposed. The model includes three kinds of entities: the pomeron, a universal GS pomeron; the reggeons, also universal and of GS type; and the core, a low-energy central real piece required by dispersion relations. The number of free functions and parameters is rather small. The approach supports naive duality and, in general, agrees with the results of absorptive models.

  1. Is nuclear energy acceptable

    International Nuclear Information System (INIS)

    Weinberg, A.M.

    1977-01-01

    Nuclear hazards are assessed as being unique only in the sense of their unfamiliarity, with future development of nuclear energy dependent on overcoming public fears. Economics is clearly in favor of properly operated nuclear energy facilities for long-term power generation. Risks arise over the potential for human error to permit improper operation and for an industry shutdown because of a reactor accident. Attempts to ascertain accident probabilities have revealed that emergency core cooling systems and containment are not simply parallel, but operate in series and provide more safety than was thought. Insurance liability, resting on the small probability of very costly damage, is felt to be best placed on the utility with the government providing ultimate protection in the event of a potentially bankrupting accident. Problems of nuclear waste handling and low-level release are felt to be solvable with present technology. Proliferation is felt to be a political problem that is incidental to power plants. Public concern is blamed on possible diversion of materials for weapons, unfamiliarity with radiation, and the demand for meticulous handling of materials and operations. Burner reactors are projected to phase out and be replaced by breeder reactors that are operated in physical isolation under strict security by a professional cadre aware of its responsibility. A restructuring of the nuclear industry is called for so that the generation of power can be insulated from the distribution and marketing functions. (13 references)

  2. West Europe without Nuclear Energy

    International Nuclear Information System (INIS)

    1999-01-01

    This document contains basic conclusions of discussion if West Europe can exist without nuclear energy: 1. Presumptions for the nuclear energy removal 2. Regional and international consulting 3. Economic competition 4. Role of the nuclear energy 5. Situation in the energetic industry 6. Costs, safety and public relations 7. Energy policy

  3. Nuclear energy and radiation

    International Nuclear Information System (INIS)

    Myers, D.K.; Johnson, J.R.

    1980-01-01

    Both the light water reactor and the Canadian heavy water reactor systems produce electricity cheaply and efficiently. They produce some fissionable byproducts, which can be recycled to extend energy sources many-fold. Besides the production of electrical power, the nuclear industry produces various radioistopes used for treatment of cancer, in diagnostic procedures in nuclear medicine, in ionization smoke detectors, and as radioactive tracers with various technological applications including the study of the mechanisms of life. The increment in environmental radiation levels resulting from operation of nuclear power reactors represents a very small fraction of the radiation levels to which we are all exposed from natural sources, and of the average radiation exposures resulting from diagnostic procedures in the healing arts. The total health hazard of the complete nuclear power cycle is generally agreed to be smaller than the hazards associated with the generation of an equal amount of electricity from most other currently available sources of energy. The hazards from energy production in terms of shortened life expectancy are much smaller in all cases than the resulting increase in health and life expectancy. (auth)

  4. Non-nuclear energies

    International Nuclear Information System (INIS)

    Nifenecker, H.

    2007-01-01

    The different meanings of the word 'energy', as understood by economists, are reviewed and explained. Present rates of consumption of fossil and nuclear fuels are given as well as corresponding reserves and resources. The time left before exhaustion of these reserves is calculated for different energy consumption scenarios. On finds that coal and nuclear only allow to reach the end of this century. Without specific dispositions, the predicted massive use of coal is not compatible with any admissible value of global heating. Thus, we discuss the clean coal techniques, including carbon dioxide capture and storage. One proceeds with the discussion of availability and feasibility of renewable energies, with special attention to electricity production. One distinguishes controllable renewable energies from those which are intermittent. Among the first we find hydroelectricity, biomass, and geothermal and among the second, wind and solar. At world level, hydroelectricity will, most probably, remain the main renewable contributor to electricity production. Photovoltaic is extremely promising for providing villages remote deprived from access to a centralized network. Biomass should be an important source of bio-fuels. Geothermal energy should be an interesting source of low temperature heat. Development of wind energy will be inhibited by the lack of cheap and massive electricity storage; its contribution should not exceed 10% of electricity production. Its present development is totally dependent upon massive public support. A large part of this paper follows chapters of the monograph 'L'energie de demain: technique, environnement, economie', EDP Sciences, 2005. (author)

  5. Hydrogen energy based on nuclear energy

    International Nuclear Information System (INIS)

    2002-06-01

    A concept to produce hydrogen of an energy carrier using nuclear energy was proposed since 1970s, and a number of process based on thermochemical method has been investigated after petroleum shock. As this method is used high temperature based on nuclear reactors, these researches are mainly carried out as a part of application of high temperature reactors, which has been carried out at an aim of the high temperature reactor application in the Japan Atomic Energy Research Institute. On October, 2000, the 'First International Conference for Information Exchange on Hydrogen Production based on Nuclear Energy' was held by auspice of OECD/NEA, where hydrogen energy at energy view in the 21st Century, technology on hydrogen production using nuclear energy, and so on, were published. This commentary was summarized surveys and researches on hydrogen production using nuclear energy carried out by the Nuclear Hydrogen Research Group established on January, 2001 for one year. They contains, views on energy and hydrogen/nuclear energy, hydrogen production using nuclear energy and already finished researches, methods of hydrogen production using nuclear energy and their present conditions, concepts on production plants of nuclear hydrogen, resources on nuclear hydrogen production and effect on global environment, requests from market and acceptability of society, and its future process. (G.K.)

  6. Nuclear energy, the climate and nuclear disarmament

    International Nuclear Information System (INIS)

    Knapp, V.

    1998-01-01

    The main concern of Pugwash, with very good reason, is nuclear disarmament, but a negative attitude towards nuclear energy is not only futile, but counterproductive as it misses opportunities to appropriately influence its development. Since nuclear energy cannot be abandoned for ecological (decrease in greenhouse gases emission) and economic reasons as a long term energy source, then efforts should be devoted to make it safe from proliferation, which is possible from scientific and technological point of view

  7. Nuclear energy and nuclear weapons proliferation

    International Nuclear Information System (INIS)

    1989-01-01

    A summary of the report dispatched in the middle of 1978 by the Atlantic Council of United States, organized by North American citizens, is presented. The report considers the relation between the production of nucleoelectric energy and the capacity of proliferation of nuclear weapons. The factors which affect the grade of proliferation risk represented by the use of nuclear energy in the world comparing this risk with the proliferation risks independently of nuclear energy, are examined. (M.C.K.) [pt

  8. Public acceptance of nuclear energy

    International Nuclear Information System (INIS)

    Reis, J.S.B.

    1984-01-01

    Man, being unacquainted with the advantages of Nuclear Energy associates it with the manufacture of weaponry. However, the benefits of Nuclear Energy is received daily. In Brazil the public has not taken an anti-nuclear position; it is recognized that the Nuclear Plan exists exclusively for peaceful purposes and the authorities keep the community well informed. The Comision Nacional de Energia Nuclear along with the Instituto de Radioproteccion y Dosimetria, Instituto de Ingenieria Nuclear and the Instituto de Investigaciones Energeticas y Nucleares has developed in 27 years of existence, a gradual, accute and effective long term programme for the formation of potentially receptive opinion of Nuclear Energy. (Author)

  9. Spin observables at intermediate energies: a tool in viewing the nucleus

    International Nuclear Information System (INIS)

    McClelland, J.B.

    1986-01-01

    This paper attempts to summarize some of the advances made in intermediate nuclear physics through measurements of spin observables, notably in the range of bombarding energies from 100 to 1000 MeV. Relative to measurements of cross section, spin observables offer a highly selective filter in viewing the nucleus. Their general utility is found in their sensitivity to particular nuclear transitions and is further augmented by their simple connections to the NN force. The advantage of higher energies is apparent from the dominance of single-step mechanisms even at large energy losses where general nuclear spin responses may be made. Experimentally, this is an energy range where efficient, high-analyzing-power polarimeters can be coupled with high resolution detection techniques. 29 refs., 5 figs

  10. Non-nuclear energies

    International Nuclear Information System (INIS)

    Nifenecker, Herve

    2006-01-01

    The different meanings of the word 'energy', as understood by economists, are reviewed and explained. Present rates of consumption of fossil and nuclear fuels are given as well as corresponding reserves and resources. The time left before exhaustion of these reserves is calculated for different energy consumption scenarios. On finds that coal and nuclear only allow to reach the end of this century. Without specific dispositions, the predicted massive use of coal is not compatible with any admissible value of global heating. Thus, we discuss the clean coal techniques, including carbon dioxide capture and storage. On proceeds with the discussion of availability and feasibility of renewable energies, with special attention to electricity production. One distinguishes controllable renewable energies from those which are intermittent. Among the first we find hydroelectricity, biomass, and geothermal and among the second, wind and solar. At world level, hydroelectricity will, most probably, remain the main renewable contributor to electricity production. Photovoltaic is extremely promising for providing villages remote deprived from access to a centralized network. Biomass should be an important source of biofuels. Geothermal energy should be an interesting source of low temperature heat. Development of wind energy will be inhibited by the lack of cheap and massive electricity storage; its contribution should not exceed 10% of electricity production. Its present development is totally dependent upon massive public support. (author)

  11. Towards sustainable nuclear energy: Putting nuclear physics to work

    International Nuclear Information System (INIS)

    Koning, A.J.; Rochman, D.

    2008-01-01

    We have developed a new method to propagate the uncertainties of fundamental nuclear physics models and parameters to the design and performance parameters of future, clean nuclear energy systems. Using Monte Carlo simulation, it is for the first time possible to couple these two fields at the extremes of nuclear science without any loss of information in between. With the help of a large database of nuclear reaction measurements, we have determined the uncertainties of theoretical nuclear reaction models such as the optical, compound nucleus, pre-equilibrium and fission models. A similar assessment is done for the parameters that describe the resolved resonance range. Integrating this into one simulation program enables us to describe all open channels in a nuclear reaction, including a complete handling of uncertainties. Moreover, in one and the same process, values and uncertainties of nuclear reactor parameters are computed. This bypasses all the intermediate steps which have been used so far in nuclear data and reactor physics. Two important results emerge from this work: (a) we are able to quantify the required quality of theoretical nuclear reaction models directly from the reactor design requirements and (b) our method leads to a deviation from the commonly assumed normal distribution for uncertainties of safety related reactor parameters, and this should be taken into account for future nuclear energy development. In particular, calculated k eff distributions show a high-value tail for fast reactor spectra

  12. A century of nuclear energy

    International Nuclear Information System (INIS)

    Hug, M.

    2009-01-01

    The author proposes a history of the French nuclear industry and nuclear energy since the Nobel prizes of 1903 and 1911. He describes and comments the context of the energy production sector before the development of the nuclear energy, the development of the institutional context, the successive and different nuclear technologies, the main characteristics of the French program at its beginning, the relationship between the nuclear energy and the public, the main accidents and lessons learned from them, the perspectives of evolution of nuclear energy

  13. The Brazilian Nuclear Energy Program

    International Nuclear Information System (INIS)

    Carvalho, H.G. de

    1980-01-01

    A survey is initially of the international-and national situation regarding energetic resources. The Brazilian Nuclear Energy Policy and the Brazilian Nuclear Program are dealt with, as well as the Nuclear Cooperation agreement signed with the Federal Republic of Germany. The situation of Brazil regarding Uranium and the main activities of the Brazilian Nuclear Energy Commission are also discussed [pt

  14. Energy: nuclear energy; Energies: l'energie nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Lung, M. [Societe Generale pour les Techniques Nouvelles (SGN), 78 - Saint-Quentin-en-Yvelines (France)

    2000-11-01

    Convinced that the nuclear energy will be the cleaner, safer, more economical and more respectful of the environment energy of the future, the author preconizes to study the way it can be implemented, to continue to improve its production, to understand its virtues and to better inform the public. He develops this opinion in the presentation of the principal characteristics of the nuclear energy: technology, radioactive wastes, radiation protection, the plutonium, the nuclear accidents, the proliferation risks, the economics and nuclear energy and competitiveness, development and sustainability. (A.L.B.)

  15. Nuclear energy and insurance

    International Nuclear Information System (INIS)

    Dow, J.C.

    1989-01-01

    It was the risk of contamination of ships from the Pacific atmospheric atomic bomb tests in the 1940's that seems first to have set insurers thinking that a limited amount of cover would be a practical possibility if not a commercially-attractive proposition. One Chapter of this book traces the early, hesitant steps towards the evolution of ''nuclear insurance'', as it is usually called; a term of convenience rather than exactitude because it seems to suggest an entirely new branch of insurance with a status of its own like that of Marine, Life or Motor insurance. Insurance in the field of nuclear energy is more correctly regarded as the application of the usual, well-established forms of cover to unusual kinds of industrial plant, materials and liabilities, characterised by the peculiar dangers of radioactivity which have no parallel among the common hazards of industry and commerce. It had, and still has, the feature that individual insurance underwriters are none too keen to look upon nuclear risks as a potential source of good business and profit. Only by joining together in Syndicates or Pools have the members of the national insurance markets been able to make proper provision for nuclear risks; only by close international collaboration among the national Pools have the insurers of the world been able to assemble adequate capacity - though still, even after thirty years, not sufficient to provide complete coverage for a large nuclear installation. (author)

  16. Glossary of nuclear energy

    International Nuclear Information System (INIS)

    1990-01-01

    TNC 90 focuses on nuclear energy technology. Some more basic or less central terms which were included in the previous glossary, TNC 55, have not been included in this version. About 1200 definitions in swedish included together with translations to english, german and french. The terms have been listed in alphabetical order. To make it easier to look up a certain term or terms that stand for related concepts the terms have been systematically arranged in a special index. (L.E.)

  17. Finnish energy outlook - role of nuclear energy

    International Nuclear Information System (INIS)

    Santaholma, J.

    2004-01-01

    New nuclear power partly covers additional electricity demand and replaces retiring power plants in coming decades after 2010. Nuclear energy secures stable, economical and predictable electricity price as well as operation environment for the electricity intensive industry for coming decades. Nuclear energy also reduces the dependence on electricity import of Finland. Nuclear energy partly enables, together with renewable, fulfilment of Finland's Kyoto commitments. Solutions for nuclear waste management are a condition sine qua non for sound nuclear programmes. Funding has been arranged. All this is carried out in Finland in a transparent way and in accordance with any democratic requirements. (author)

  18. Angular correlations and fragmentation in intermediate energy heavy ion collisions

    International Nuclear Information System (INIS)

    Kristiansson, Anders.

    1990-05-01

    Intermediate energy heavy-ion collisions have been studied from 35 A MeV up to 94 A MeV at various accelerators. Angular correlations between light particles and detection of projectile- and target-fragments have been used to investigate the reaction mechanisms in this transition region between low- and high energy. An excess of correlations is observed in the particle-particle elastic scattering plane. This excess increases with particle mass and can be understood in terms of momentum conservation. The fragmentation measurements gives an indication that both energy and momentum transfer to the spectator volumes does occur. (author)

  19. Nuclear energy in Malaysia

    International Nuclear Information System (INIS)

    Jacob, F.X.

    1996-01-01

    The Malaysian Vision 2020 envisages doubling of the its economy every ten years for the next three decades. The Second Outline Perspective plan 1991-2000 (OPP2), also known as the National Development Policy (NDP) will set the pace to enable Malaysia to become a fully developed nation by the year 2020. The Malaysian economy is targeted to grow at 7 percent per annum in the decade of OPP2. In view of the targets set under Vision 2020, it is important to ensure that energy does not become a constraint to growth, and this sector develops in a least cost basis. Energy is crucial for industrialization and no modern industrial state can function without it. The paper presents a description of the main utilities in the country. Their installed capacities, maximum demand, generation mix and customers served are discussed. The electricity demand forecast till the year 2020 is presented. The paper presents this for 4 scenarios - a low growth, business as usual scenario, a moderate growth, business as usual scenario, a moderate growth, energy efficient scenario and a targeted growth, energy efficient scenario. The energy resources in the country is described together with its energy policy. The country's four-fuel policy is elaborated with the various options discussed. The environmental and pricing policies with regards to energy is also briefly given. Finally the nuclear option is presented in this context of the country's energy policy. The country had undertaken various studies for the nuclear option. These studies are given in the paper. The purpose of these studies and what the government decided is also discussed. Finally the prospects for the nuclear option in the future for the country is discussed. It is concluded that while, for the present, the nuclear option is not considered by the government, this may not be so in the future. The various reasons for this is given and the paper concludes that it may be prudent to keep this option under constant review. (J.P.N.)

  20. Nuclear energy achievements and prospects

    International Nuclear Information System (INIS)

    Lewiner, Colette

    1992-01-01

    Within half a century nuclear energy achieved very successful results. Only for European Community, nuclear energy represents 30% in electricity generation. At this stage, one state that the nuclear energy winning cards are competitiveness and Gentleness to the environment. Those winning cards will still be master cards for the 21st century, provided nuclear energy handles rigorously: Safety in concept and operation of power plants; radioactive waste management, and communication

  1. Dictionary of nuclear energy termination

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1983-04-15

    This book lists termination of nuclear energy such as abbreviation, symbol, unit of nuclear energy, radiological unit, the symbol for element, isotope chart and the periodic table. This book contains about 5500 words involving to nuclear energy with index in Korean and English. It arranges alphabetically. So, with this book, it is easy and fast to find out the glossary, unit and symbol on nuclear energy.

  2. Dictionary of nuclear energy termination

    International Nuclear Information System (INIS)

    1983-04-01

    This book lists termination of nuclear energy such as abbreviation, symbol, unit of nuclear energy, radiological unit, the symbol for element, isotope chart and the periodic table. This book contains about 5500 words involving to nuclear energy with index in Korean and English. It arranges alphabetically. So, with this book, it is easy and fast to find out the glossary, unit and symbol on nuclear energy.

  3. The economics of nuclear energy

    International Nuclear Information System (INIS)

    Wilmer, P.

    2004-01-01

    In common with many of the issues surrounding nuclear energy, there is some truth in the popular claim that nuclear energy is 'not economic', but this is far from being a universal truth. This paper puts forward the view that, overall, nuclear energy can be a competitive source of electricity and a realistic economic option for the future. (author)

  4. Nuclear energy prospects to 2000

    International Nuclear Information System (INIS)

    1982-01-01

    This report describes the potential and trends of electricity use in OECD-countries as the main parameter of nuclear power development, including oil displacement and future generation mix, gives a most recent assessment of nuclear power growth to the year 2000, deals with supply and demand considerations covering the whole fuel cycle, assesses the impact of the nuclear contribution on the overall energy situation according to three energy scenarios and the consequences of a possible nuclear shortfall, and finally reviews other factors influencing nuclear energy growth such as security of supply, economics of nuclear power production as wells as public and utility confidence in nuclear power

  5. Economic Analysis of Nuclear Energy

    International Nuclear Information System (INIS)

    Lee, Man Ki; Moon, K. H.; Kim, S. S.; Lim, C. Y.; Oh, K. B.

    2006-12-01

    It has been well recognized that securing economic viabilities along with technologies are very important elements in the successful implementation of nuclear R and D projects. The objective of the Project is to help nuclear energy to be utilized in an efficient way by analyzing major issues related with nuclear economics. The study covers following subjects: the role of nuclear in the future electric supply system, economic analysis of nuclear R and D project, contribution to the regional economy from nuclear power. In addition, the study introduces the international cooperation in the methodological area of efficient use of nuclear energy by surveying the international activities related with nuclear economics

  6. Economic Analysis of Nuclear Energy

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Man Ki; Moon, K. H.; Kim, S. S.; Lim, C. Y.; Oh, K. B

    2006-12-15

    It has been well recognized that securing economic viabilities along with technologies are very important elements in the successful implementation of nuclear R and D projects. The objective of the Project is to help nuclear energy to be utilized in an efficient way by analyzing major issues related with nuclear economics. The study covers following subjects: the role of nuclear in the future electric supply system, economic analysis of nuclear R and D project, contribution to the regional economy from nuclear power. In addition, the study introduces the international cooperation in the methodological area of efficient use of nuclear energy by surveying the international activities related with nuclear economics.

  7. Intermediate energy heavy ion reactions. A program for CELSIUS

    International Nuclear Information System (INIS)

    Jakobsson, B.

    1986-02-01

    The accelerator system under construction in Uppsala with the ECR-source + the K equals 200 synchrocyclotron + the CELSIUS synchrotron ring for storage, cooling and acceleration opens up possibilities for a very fruitful heavy ion physics program. Some recently obtained results and some recent ideas on intermediate energy reactions are discussed and speculations are made about some experiments where the unconventional qualities of CELSIUS beams could be utilized. (author)

  8. Interactions of quarks and gluons with nuclei at intermediate energies

    Energy Technology Data Exchange (ETDEWEB)

    Mueller, A.H. [Columbia Univ., New York, NY (United States)

    1994-04-01

    Some processes involving the interaction of medium energy quarks and gluons with nuclear matter are described. Possible mechanisms for the A-dependence of the energy loss of leading protons produced in proton-nucleus collisions are given, and an experiment which may help to distinguish these mechanisms is described. A possible color transparency experiment at CEBAF is described. Experiments to measure energy loss of quarks in nuclear matter and the formation time of hadrons are discussed along with the possibilities of measuring {sigma}{sub J}/{psi} and {sigma}{sub {psi}{prime}} at CEBAF.

  9. Next Generation Nuclear Plant Intermediate Heat Exchanger Acquisition Strategy

    Energy Technology Data Exchange (ETDEWEB)

    Mizia, Ronald Eugene [Idaho National Lab. (INL), Idaho Falls, ID (United States)

    2008-04-01

    DOE has selected the High Temperature Gas-cooled Reactor (HTGR) design for the Next Generation Nuclear Plant (NGNP) Project. The NGNP will demonstrate the use of nuclear power for electricity and hydrogen production. It will have an outlet gas temperature in the range of 900°C to 950°C and a plant design service life of 60 years. The reactor design will be a graphite moderated, helium cooled, prismatic or pebble-bed reactor, and use low-enriched uranium, TRISO-coated fuel. The plant size, reactor thermal power, and core configuration will ensure passive decay heat removal without fuel damage or radioactive material releases during accidents. The NGNP Materials Research and Development (R&D) Program is responsible for performing R&D on likely NGNP materials in support of the NGNP design, licensing, and construction activities. Selection of the technology and design configuration for the NGNP must consider both the cost and risk profiles to ensure that the demonstration plant establishes a sound foundation for future commercial deployments. The NGNP challenge is to achieve a significant advancement in nuclear technology while at the same time setting the stage for an economically viable deployment of the new technology in the commercial sector soon after 2020. The purpose of this report is to address the acquisition strategy for the NGNP Intermediate Heat Exchanger (IHX).This component will be operated in flowing, impure helium on the primary and secondary side at temperatures up to 950°C. There are major high temperature design, materials availability, and fabrication issues that need to be addressed. The prospective materials are Alloys 617, 230, 800H and X, with Alloy 617 being the leading candidate for the use at 950°C. The material delivery schedule for these materials does not pose a problem for a 2018 start up as the vendors can quote reasonable delivery times at the moment. The product forms and amount needed must be finalized as soon as possible. An

  10. Nuclear energy and the nuclear industry

    International Nuclear Information System (INIS)

    Chester, K.

    1982-01-01

    In order to make a real contribution to the nuclear energy debate (is nuclear energy the limitless solution to man's energy problems or the path to man's destruction) people must be aware of the facts. The Science Reference Library (SRL) has a collection of the primary sources of information on nuclear energy - especially journals. This guideline aims to draw attention to the up-to-date literature on nuclear energy and its technology, freely available for consultation in the main Holborn reading room. After explanations of where to look for particular types of information and the SRL classification, the booklet gives lists and brief notes on the sources held. These are abstracting and indexing periodicals and periodicals. Reports, conference proceedings, patents, bibliographies, directories, year-books and buyer's guides are covered very briefly but not listed. Nuclear reactor data and organisations are also listed with brief details of each. (U.K.)

  11. Institute for Nuclear Research and Nuclear Energy and Nuclear Science

    International Nuclear Information System (INIS)

    Stamenov, J.

    2004-01-01

    The Institute for Nuclear Research and Nuclear Energy (INRNE) of the Bulgarian Academy of Sciences is the leading Bulgarian Institute for scientific investigations and applications of nuclear science. The main Institute's activities in the field of elementary particles and nuclear physics, high energy physics and nuclear energy, radiochemistry, radioecology, radioactive wastes treatment, monitoring of the environment, nuclear instruments development ect. are briefly described. Several examples for: environmental radiation monitoring; monitoring of the radioactivity and heavy metals in aerosols, 99m Tc clinical use, Boron Neutron Capture Therapy application of IRT-2000 Research Reactor, neutron fluence for reactor vessel embrittlement, NPP safety analysis, nuclear fuel modelling are also presented

  12. Advanced Intermediate Heat Transport Loop Design Configurations for Hydrogen Production Using High Temperature Nuclear Reactors

    International Nuclear Information System (INIS)

    Chang Oh; Cliff Davis; Rober Barner; Paul Pickard

    2005-01-01

    The US Department of Energy is investigating the use of high-temperature nuclear reactors to produce hydrogen using either thermochemical cycles or high-temperature electrolysis. Although the hydrogen production processes are in an early stage of development, coupling either of these processes to the high-temperature reactor requires both efficient heat transfer and adequate separation of the facilities to assure that off-normal events in the production facility do not impact the nuclear power plant. An intermediate heat transport loop will be required to separate the operations and safety functions of the nuclear and hydrogen plants. A next generation high-temperature reactor could be envisioned as a single-purpose facility that produces hydrogen or a dual-purpose facility that produces hydrogen and electricity. Early plants, such as the proposed Next Generation Nuclear Plant (NGNP), may be dual-purpose facilities that demonstrate both hydrogen and efficient electrical generation. Later plants could be single-purpose facilities. At this stage of development, both single- and dual-purpose facilities need to be understood. A number of possible configurations for a system that transfers heat between the nuclear reactor and the hydrogen and/or electrical generation plants were identified. These configurations included both direct and indirect cycles for the production of electricity. Both helium and liquid salts were considered as the working fluid in the intermediate heat transport loop. Methods were developed to perform thermal-hydraulic evaluations and cycle-efficiency evaluations of the different configurations and coolants. The thermal-hydraulic evaluations estimated the sizes of various components in the intermediate heat transport loop for the different configurations. The relative sizes of components provide a relative indication of the capital cost associated with the various configurations. Estimates of the overall cycle efficiency of the various

  13. Energy, electricity and nuclear power

    International Nuclear Information System (INIS)

    Reuss, P.; Naudet, G.

    2008-01-01

    After an introduction recalling what energy is, the first part of this book presents the present day energy production and consumption and details more particularly the electricity 'vector' which is an almost perfect form of energy despite the fact that it is not a primary energy source: it must be generated from another energy source and no large scale storage of this energy is possible. The second part of the book is devoted to nuclear energy principles and to the related technologies. Content: 1 - What does energy mean?: the occurrence of the energy concept, the classical notion of energy, energy notion in modern physics, energy transformations, energy conservation, irreversibility of energy transformations, data and units used in the energy domain; 2 - energy production and consumption: energy systems, energy counting, reserves and potentialities of energy resources, production of primary energies, transport and storage of primary energies, energy consumption, energy saving, energy markets and prices, energy indicators; 3 - electric power: specificity of electricity and the electric system, power networks, power generation, electricity storage, power consumption and demand, power generation economics, electricity prices and market; 4 - physical principles of nuclear energy: nuclei structure and binding energy, radioactivity and nuclear reactions, nuclear reactions used in energy generation, basics of fission reactors physics; 5 - nuclear techniques: historical overview, main reactor types used today, perspectives; 6 - fuel cycle: general considerations, uranium mining, conversion, enrichment, fuel fabrication, back-end of the cycle, plutonium recycle in water cooled reactors; 7 - health and environmental aspects of nuclear energy: effects on ionizing radiations, basics of radiation protection, environmental impacts of nuclear energy, the nuclear wastes problem, specific risks; 8 - conclusion; 9 - appendixes (units, physics constants etc..)

  14. Symposium on Nuclear Energy. Proceedings

    International Nuclear Information System (INIS)

    1981-01-01

    The energy problem poses a big challenge to a developing country like the Philippines. The development of renewable energy sources is not enough. Aware then of the limitations of these energy sources, in spite of arguments against nuclear energy we have no other recourse but to go nuclear. This symposium emphasizes the importance of energy development to attain the country's progress and discusses the pros and economics of nuclear power. (RTD)

  15. Nuclear energy supports sustainable development

    International Nuclear Information System (INIS)

    Koprda, V.

    2005-01-01

    The article is aimed at acceptability, compatibility and sustainability of nuclear energy as non-dispensable part of energy sources with vast innovation potential. The safety of nuclear energy , radioactive waste deposition, and prevention of risk from misuse of nuclear material have to be very seriously abjudged and solved. Nuclear energy is one of the ways how to decrease the contamination of atmosphere with carbon dioxide and it solves partially also the problem of global increase of temperature and climate changes. Given are the main factors responsible for the renaissance of nuclear energy. (author)

  16. Preliminary design analysis of hot gas ducts and a intermediate heat exchanger for the nuclear hydrogen reactor

    International Nuclear Information System (INIS)

    Song, K. N.; Kim, Y. W.

    2008-01-01

    Korea Atomic Energy Research Institute (KAERI) is in the process of carrying out a nuclear hydrogen system by considering the indirect cycle gas cooled reactors that produce heat at temperatures in the order of 950 .deg. C. Primary and secondary hot gas ducts with coaxial double tubes and are key components connecting a reactor pressure vessel and a intermediate heat exchanger for the nuclear hydrogen system. In this study, preliminary design analyses on the hot gas ducts and the intermediate heat exchanger were carried out. These preliminary design activities include a preliminary design on the geometric dimensions, a preliminary strength evaluation, thermal sizing, and an appropriate material selection

  17. Inevitability of nuclear energy

    International Nuclear Information System (INIS)

    Ramanna, R.

    1997-01-01

    The Indian atomic energy programme that has been launched in the late 1940s, with the courageous vision of Homi Bhabha, had made remarkable progress during the fifties, sixties and till the mid-seventies, leading to the establishment of a comprehensive base of nuclear science, technology and engineering, and the setting up of nuclear power stations. After the Pokharan experiment in 1974, the programme had to face a hostile attitude from the Western powers, with the stoppage of flow of technology and equipment from the West. The programme had shown the resilience to face the challenge, and march ahead, developing a range of indigenous capabilities both within the Department and in the Indian industry, though with a certain loss in the momentum. The successful design, construction and operation of the 100 Mw(t) research reactor Dhruva in Trombay, and the successful commissioning of the Fast Breeder Test Reactor in Kalpakkam, with a unique plutonium-uranium carbide fuel of Indian design, are significant capability demonstrations in the latter phase. On the power front, the twin-unit power stations at Narora (UP) and Kakrapar (Gujarat) have shown excellent performance, with respect to plant availability and capacity factor. This article presents an assessment of the progress achieved so far, amidst the difficulties encountered. Factors accounting for the apparently slow pace of growth are discussed, and the public concerns regarding nuclear safety and safety regulations are also addressed. In a situation where acute power shortages have become a fact of life, and difficulties can be foreseen in the development of coal and hydel resources (which are also limited in extent), the importance of pursuing the nuclear energy option is re-iterated. The need for unstinted government support to the program at this stage is also emphasized. (author)

  18. Nuclear energy and independence

    International Nuclear Information System (INIS)

    Rotblat, J.

    1978-01-01

    The pro-nuclear lobby in the United Kingdom won its battle. The Report on the Windscale Inquiry strongly endorsed the application by British Nuclear Fuels (a company owned by the government) to set up a plant to reprocess spent oxide fuels from thermal reactors; a motion in Parliament to postpone a decision was heavily defeated. The Windscale Inquiry was an attempt to settle in a civilized manner what has been tried in other countries by demonstrations and violence. In this exercise, a High Court Judge was given the task of assessing an enormous mass of highly complex technical and medical material, as well as economic, social, and political arguments. The outcome is bitterly disappointing to the objectors, all of whose arguments were rejected. Although the question of whether Britain should embark on a fast breeder reactor program was specifically excluded from the Inquiry, it clearly had a bearing on it. A decision not to proceed with the reprocessing plant would have made a fast breeder program impossible; indeed, the Report argues that such a decision would involve throwing away large indigenous energy resources, a manifest advocacy of the fast breeder. Other arguments for the decision to go ahead with the reprocessing plant included the need to keep the nuclear industry alive, and the profit which Britain will make in processing fuels from other countries, particularly Japan. The author comments further on present UK policy, taking a dissenting view, and then comments on the paper, Nuclear Energy and the Freedom of the West, by A.D. Sakharov

  19. Nuclear dissipation effects on fission and evaporation in systems of intermediate fissility

    Directory of Open Access Journals (Sweden)

    Gelli N.

    2010-03-01

    Full Text Available The systems of intermediate fissility 132Ce and 158Er have been studied experimentally and theoretically in order to investigate the dissipation properties of nuclear matter. Cross sections of fusion-fission and evaporation residues channels together with charged particles multiplicities in both channels, their spectra, angular correlations and mass-energy distribution of fission fragments have been measured. Theoretical analysis has been performed using multi-dimensional stochastic approach with realistic treatment of particle evaporation. The results of analysis show that full one-body or unusually strong two-body dissipation allows to reproduce experimental data. No temperature dependent dissipation was needed.

  20. Low Energy Nuclear Reactions?

    CERN Multimedia

    CERN. Geneva; Faccini, R.

    2014-01-01

    After an introduction to the controversial problem of Low Energy Nuclear Reactions (LENR) catalyzed by neutrons on metallic hydride surfaces we present the results of an experiment, made in collaboration with ENEA Labs in Frascati, to search neutrons from plasma discharges in electrolytic cells. The negative outcome of our experiment goes in the direction of ruling out those theoretical models expecting LENR to occur in condensed matter systems under specific conditions. Our criticism on the theoretical foundations of such models will also be presented.

  1. Desalination and nuclear energy

    International Nuclear Information System (INIS)

    Romeijn, A.A.

    1992-01-01

    The techniques for fresh water production from seawater have matured and capacities have increased considerably over the past decades. It is feasible to combine seawater desalination with the generation of electricity since power stations can provide energy and low grade heat during off peak periods for the purpose of fresh water production. A dual purpose installation, combining a seawater desalination facility with a light water reactor power generation station promises interesting possibilities. The case in South Africa, where nuclear power stations are most economically sited far from the inland coal fields, is discussed. 1 ill

  2. Ethics and Nuclear Energy

    International Nuclear Information System (INIS)

    Nezic, N.; Dodig, D.

    2000-01-01

    Should the scientist be a morally unbiased person? This is the eternal question asked by many great thinkers interested in science. The answer is hard to find. Scientists are expected to take into consideration the consequences of their actions before they actually start ot act. Sometimes they have to make certain sacrifices in order to help mankind. Unfortunately, we are witnesses of some intelligent, but inhuman and selfish people carrying out their even most destructive ideas. In this paper the relation between scientists and experts in the field of nuclear energy and the public will be discussed. (author)

  3. Nuclear Energy Literature Review

    International Nuclear Information System (INIS)

    Simic, Z.; Wastin, F.

    2016-01-01

    In the light of five years after a major accident at the Fukushima Daiichi nuclear power plant it is interesting to make nuclear energy related literature review. There is a number of accidents related reports from all major international institutions (like the IAEA and OECD NEA) and research organizations have drawn conclusions and lessons to learn from this terrible accident. These reports are the result of expert and scientific analyses carried out during these five years and they present ideal sources for both understanding what has happened and what can be learned in order to avoid and mitigate effects of such events in the future. From a wider perspective it is also interesting to analyze the impact on research and development (R and D) activities. This literature review is performed with hope to gain some useful insights from the analysis of the volume and topics in all research activities related to the Fukushima accident and nuclear energy (NE) altogether. This kind of review should at least provide an overview of trends and provide base for better planning of future activities. This paper analyzes the published NE related research of over more than 50 years with focus on three major nuclear accidents (TMI, Chernobyl and Fukushima). It has been performed using Scopus tools and database, and mainly focuses on statistics related to the subjects, countries, keywords and type of publishing. It also analyses how responsive is nuclear energy related R and D regarding the volume and subjects, and how is that research spread among most active countries. Nuclear power accidents influence increase and change of research. Both accidents, Chernobyl and Fukushima had maximum share in all nuclear power related papers at similar yearly level (9 percent in 1991 and 12 percent in 2015 respectively). TMI peaked at the 2.5 percent share in 1982. Engineering is the most frequent subjects for TMI and cumulative NE related publishing. Medicine and environmental science subjects

  4. Nuclear energy - a professional assessment

    Energy Technology Data Exchange (ETDEWEB)

    1984-01-01

    The report falls under the headings: the role of the Watt Committee in nuclear energy; supply and demand, and economics of nuclear power; technical means (types of reactor; fuel cycle; nuclear energy for applications other than large-scale electricity generation); availability of resources (nuclear fuel; British industrial capacity; manpower requirements for a British nuclear power programme); environment (environmental issues; disposal of radioactive wastes); balance of risk and advantage in the peaceful use of nuclear energy (proliferation; safety and risk; benefits; public acceptability, awareness, education); summary and general comments.

  5. Nuclear energy - a professional assessment

    International Nuclear Information System (INIS)

    1984-01-01

    The report falls under the headings: the role of the Watt Committee in nuclear energy; supply and demand, and economics of nuclear power; technical means (types of reactor; fuel cycle; nuclear energy for applications other than large-scale electricity generation); availability of resources (nuclear fuel; British industrial capacity; manpower requirements for a British nuclear power programme); environment (environmental issues; disposal of radioactive wastes); balance of risk and advantage in the peaceful use of nuclear energy (proliferation; safety and risk; benefits; public acceptability, awareness, education); summary and general comments. (U.K.)

  6. Present Status of Nuclear Energy

    Czech Academy of Sciences Publication Activity Database

    Wagner, Vladimír

    2013-01-01

    Roč. 2013, SI (2013), s. 89-94 ISSN 0375-8842. [European Nuclear Forum. Praha, 12.05.2013-13.05.2013] Institutional support: RVO:61389005 Keywords : nuclear energy * nuclear reactors * electricity production Subject RIV: BG - Nuclear, Atomic and Molecular Physics, Colliders

  7. High energy nuclear physics

    International Nuclear Information System (INIS)

    Meyer, J.

    1988-01-01

    The 1988 progress report of the High Energy Nuclear Physics laboratory (Polytechnic School, France), is presented. The Laboratory research program is focused on the fundamental physics of interactions, on the new techniques for the acceleration of charged particles and on the nuclei double beta decay. The experiments are performed on the following topics: the measurement of the π 0 inclusive production and the photons production in very high energy nuclei-nuclei interactions and the nucleon stability. Concerning the experiments under construction, a new detector for LEP, the study and simulation of the hadronic showers in a calorimeter and the H1 experiment (HERA), are described. The future research programs and the published papers are listed [fr

  8. Solar nuclear energy

    International Nuclear Information System (INIS)

    Tlalka, R.

    1977-01-01

    Brief characteristics are given of solar radiation and of its spectral range. The relation is derived for the gas pressure in the centre of the Sun and the mechanism is described of particle interactions in the Sun. Using the Eddington model the basic nuclear reactions in the Sun are described, namely the proton-proton chain and the C-N cycle. The energy transfer is discussed from the Sun to the boundaries of the Earth atmosphere and inside the atmosphere. The measurement of solar energy is conducted with actinometers, i.e., pyrheliometers, pyranometers and combinations thereof. The results of solar radiation measurement in different weather conditions are graphically represented. (J.B.)

  9. Speaking of nuclear energy

    International Nuclear Information System (INIS)

    Gillen, V.A.

    1992-01-01

    At the 1989 International Atomic Energy Agency (IAEA) General Conference, the Japanese Government pledged an extra-budgetary contribution for a three-year enhanced public information programme. On this basis the programme was developed centering on a series of two-day regional media seminars. It was determined that these seminars were to be informative and educational, and provide balanced, honest background material on the subject of nuclear energy. The speakers chosen were a mix of IAEA and outside experts from around the world. About 500 participants from 20 countries took part over the initial three years of the programme. This document contains a selection of speeches and topics that, is believed, captured the essence of the information presented during the regional seminars

  10. Topical subjects of nuclear energy

    International Nuclear Information System (INIS)

    Baumgaertel, G.; Borsch, P.; Halaszovich, S.; Laser, M.; Paschke, M.; Richter, B.; Stein, G.; Stippler, R.; Wagner, H.J.

    1990-01-01

    The report supplements and extends basic information contained in the seminar report 'Use and risk of nuclear energy' (Juel-Conf-17). The contributions deal with nuclear waste management, measures to avoid the misuse of nuclear fuels, and the properties and use of plutonium. As against the last edition, the subject 'Energy and environment' has been added. (orig.) [de

  11. Communication techniques and nuclear energy

    International Nuclear Information System (INIS)

    Carpintero Santamaria, N.

    2005-01-01

    The paper presents some thoughts on several factors related to nuclear energy and the way they are presented by the mass media, usually provoking controversy to the Spanish society and thus, undermining public acceptance. Some possibilities for boosting nuclear energy among public opinion are suggested, emphasizing the fact that nuclear power is essential because it is both ecologically and economically sound. (Author)

  12. Education of nuclear energy specialists

    International Nuclear Information System (INIS)

    Paulikas, V.

    1999-01-01

    Preparation system of nuclear energy specialists in Lithuania is presented. Nuclear engineers are being prepared at Kaunas University of Technology. Post-graduates students usually continue studies at Obninsk Nuclear Energy Institute in Russia. Many western countries like Sweden, Finland and US is providing assistance in education of Lithuanian specialists. Many of them were trained in these countries

  13. Nuclear energy and the public

    International Nuclear Information System (INIS)

    Kyd, D.R.

    1994-01-01

    This paper is the opening speech from a national seminar on the uses for nuclear energy in everyday life. The speaker, the public information director for the International Atomic Energy Agency (IAEA), stresses the peaceful uses of nuclear energy. He points out that used for peaceful purposes, and prudently, nuclear energy applications have, tremendous benefits to offer mankind in both the industrial world and developing nations

  14. Quantum nuclear pasta and nuclear symmetry energy

    Science.gov (United States)

    Fattoyev, F. J.; Horowitz, C. J.; Schuetrumpf, B.

    2017-05-01

    Complex and exotic nuclear geometries, collectively referred to as "nuclear pasta," are expected to appear naturally in dense nuclear matter found in the crusts of neutron stars and supernovae environments. The pasta geometries depend on the average baryon density, proton fraction, and temperature and are critically important in the determination of many transport properties of matter in supernovae and the crusts of neutron stars. Using a set of self-consistent microscopic nuclear energy density functionals, we present the first results of large scale quantum simulations of pasta phases at baryon densities 0.03 ≤ρ ≤0.10 fm-3 , proton fractions 0.05 ≤Yp≤0.40 , and zero temperature. The full quantum simulations, in particular, allow us to thoroughly investigate the role and impact of the nuclear symmetry energy on pasta configurations. We use the Sky3D code that solves the Skyrme Hartree-Fock equations on a three-dimensional Cartesian grid. For the nuclear interaction we use the state-of-the-art UNEDF1 parametrization, which was introduced to study largely deformed nuclei, hence is suitable for studies of the nuclear pasta. Density dependence of the nuclear symmetry energy is simulated by tuning two purely isovector observables that are insensitive to the current available experimental data. We find that a minimum total number of nucleons A =2000 is necessary to prevent the results from containing spurious shell effects and to minimize finite size effects. We find that a variety of nuclear pasta geometries are present in the neutron star crust, and the result strongly depends on the nuclear symmetry energy. The impact of the nuclear symmetry energy is less pronounced as the proton fractions increase. Quantum nuclear pasta calculations at T =0 MeV are shown to get easily trapped in metastable states, and possible remedies to avoid metastable solutions are discussed.

  15. Is nuclear energy ethically justifiable?

    International Nuclear Information System (INIS)

    Zuend, H.

    1988-01-01

    Nuclear technology brings the chance to provide an essential long term contribution to the energy supply of the world population and to use the raw materials uranium and thorium which have no other use. The use of nuclear energy is ethically justifiable providing certain simple fundamental rules for the design of nuclear facilities are observed. Such rules were clearly violated before the reactor accident at Chernobyl. They are, however, observed in our existing nuclear power plants. Compared with other energy systems nuclear energy has, with the exception of natural gas, the lowest risk. The consideration of the ethical justification of nuclear energy must also include the question of withdrawal. A withdrawal would have considerable social consequences for the industrial nations as well as for the developing countries. The problem of spreading alarm (and concern) by the opponents of nuclear energy should also be included in the ethical justification. 8 refs., 2 figs

  16. Nuclear energy: a sensible alternative

    International Nuclear Information System (INIS)

    Ott, K.O.; Spinrad, B.I.

    1985-01-01

    This book presents information on energy futures; energy demand, energy supplies; exclusive paths and difficult choices--hard, soft, and moderate energy paths; an energy-deficient society; energy shortages; economics of light-water reactors; fast breeder reactor economics; international cooperation in the nuclear field; nuclear recycling; alternative fuels, fuel cycles, and reactors; the nuclear weapons proliferation issue; paths to a world with more reliable nuclear safeguards; the homemade bomb issue; LWR risk assessment; accident analysis and risk assessment; the waste disposal risk; radon problems; risks in our society; health effects of low-level radiation; routine releases of radioactivity from the nuclear industry; low-level radioactivity and infant mortality; the myth of plutonium toxicity; myths about high-level radioactive waste; the aging reactor myth; the police state myth; insurance and nuclear power--the Price-Anderson Act; and solar and nuclear power as partners

  17. Nuclear energy in the world

    International Nuclear Information System (INIS)

    Grippi, Sidney

    2006-01-01

    The chapter reports the nuclear energy beginning in the world including a chronology of the atomic bomb birth, the annual growth rate of electronuclear energy in the world, a comparison of energy production in thermoelectric bases

  18. Is nuclear energy ethically justifiable?

    International Nuclear Information System (INIS)

    Zuend, H.

    1987-01-01

    Nuclear technology offers the chance to make an extremely long term contribution to the energy supply of the earth. The use of nuclear energy is ethically justifiable, provided that several fundamental rules are obeyed during the technical design of nuclear installations. Such fundamental rules were unequivocally violated in the nuclear power plant Chernobyl. They are, however, fulfilled in the existing Swiss nuclear power plants. Improvements are possible in new nuclear power plants. Compared to other usable energy systems nuclear energy is second only to natural gas in minimal risk per generated energy unit. The question of ethical justification also may rightly be asked of the non-use of nuclear energy. The socially weakest members of the Swiss population would suffer most under a renunciation of nuclear energy. Future prospects for the developing countries would deteriorate considerably with a renunciation by industrial nations of nuclear energy. The widely spread fear concerning the nuclear energy in the population is a consequence of non-objective discussion. 8 refs., 2 figs

  19. Hydrogen and nuclear energy

    International Nuclear Information System (INIS)

    Duffey, R.B.; Miller, A.I.; Hancox, W.T.; Pendergast, D.R.

    1999-01-01

    The current world-wide emphasis on reducing greenhouse gas (GHG) emissions provides an opportunity to revisit how energy is produced and used, consistent with the need for human and economic growth. Both the scale of the problem and the efforts needed for its resolution are extremely large. We argue that GHG reduction strategies must include a greater penetration of electricity into areas, such as transportation, that have been the almost exclusive domain of fossil fuels. An opportunity for electricity to displace fossil fuel use is through electrolytic production of hydrogen. Nuclear power is the only large-scale commercially proven non-carbon electricity generation source, and it must play a key role. As a non-carbon power source, it can also provide the high-capacity base needed to stabilize electricity grids so that they can accommodate other non-carbon sources, namely low-capacity factor renewables such as wind and solar. Electricity can be used directly to power standalone hydrogen production facilities. In the special case of CANDU reactors, the hydrogen streams can be preprocessed to recover the trace concentrations of deuterium that can be re-oxidized to heavy water. World-wide experience shows that nuclear power can achieve high standards of public safety, environmental protection and commercially competitive economics, and must . be an integral part of future energy systems. (author)

  20. The nuclear energy in France

    International Nuclear Information System (INIS)

    Pedroso, L.J.

    1983-01-01

    An overview of the nuclear energy in France is done. The great centers and the great research lines of the French nuclear program, as well as its present status and prospects for the future are presented. (EG) [pt

  1. Nuclear energy and greenhouse effect

    International Nuclear Information System (INIS)

    Strub, R.A.

    1991-01-01

    The contribution of nuclear power plants against the greenhouse effects is evaluated, not only nuclear energy is unable to fight greenhouse effect increase but long life wastes endanger environment. 8 refs

  2. Nuclear energy and public acceptance

    International Nuclear Information System (INIS)

    El Osery, I.A.

    1988-01-01

    The soundness of use of nuclear energy in electric energy generation has received public concern due to the public highly exaggerated fear of nuclear power. It is the purpose of this paper to clear up some issues of public misunderstanding of nuclear power. Those of most importance are the unjustified fears about safety of nuclear power plants and the misunderstanding of nuclear risks and fears of nuclear power plants environmental impact. The paper is addressed to the public and aims at clarifying these issues in simple, correct, and convincing terms in such a way that links the gap between the scientists of nuclear energy and the general public; this gap which the media has failed to cover and failed to convey honestly and correctly the scientific facts about nuclear energy from the scientists standards to the public

  3. Present market for nuclear energy

    International Nuclear Information System (INIS)

    Marzo, M.A.S.

    1987-01-01

    The present market for nuclear energy is present since nuclear production and electric power generation to the utilization of radioisotopes in medicine and biology. Some data about the main world suppliers to this market are shown. (E.G.) [pt

  4. Energy paper II: Nuclear energy revival

    International Nuclear Information System (INIS)

    Anonymous

    2008-01-01

    ESI Energy paper is called 'Issue Paper' awarded by think-tank Energy Security Institute. The second issue focuses on the energy security of countries from the perspective of Renaissance of construction of nuclear power plants. Topicality is documented by fluctuations in fossil fuel prices on the world commodity markets and by extortionate potential, disposed by their main producers. The Slovak Republic is actively engaged into international dialogue on the need for the development of nuclear energy.

  5. Dynamic processes in heavy-ion collisions at intermediate energies

    Science.gov (United States)

    Prendergast, E. P.

    1999-03-01

    This thesis describes the study of the reaction dynamics in heavy-ion collisions of small nuclear systems at intermediate energies. For this, experiments were performed of 24Mg+27A1 at 45 and 95 AMeV. The experiments described in this thesis were performed at the GANIL accelerator facility in Caeri (France) using the Huygens detectors in conjunction with the ‘MUR’. The Huygens detectors consist of the CsI(Tl)-Wall (CIW) covering the backward hemisphere and, located at mid-rapidity, the central trigger detector (CTD), a gas chamber with microstrip read-out backed by 48 plastic scintillators. The forward region is covered by 16 of the plastic scintillators of the CTD and by the MUR, a time-of-flight wall consisting of 96 plastic scintillator sheets. In earlier experiments only fragments with atomic number, Z, greater then two could be identifled in the CTD. Therefore, an investigation was done into the properties of different drift gases. The use of freon (CF4) in the drift chamber, combined with an increase of the gas pressure to 150 mbar, makes it possible to identify all particles with Z ≥ 2. Under these conditions particles with Z = 1 can only be identifled to approximately 25 AMeV. The Isospin Quantum Molecular Dynamics (IQMD) model has been used, to interpret the measured data. This model gives a microscopical description of heavy-ion collisions and simulates collisions on an event by event basis. In IQMD all protons and neutrons are represented as individual Gaussian wave packets. After initialisation the path of each nucleon is calculated for 200 fm/c, after which the simulation is stopped. At this time, nucleons which are close in space are clustered into fragments. The events generated by IQMD can then be processed by a GEANT detector simulation. This calculation takes into account the effects of the detector on the incoming particles. By using the GEANT simulation it is possible to give a direct comparison between the results of IQMD and the

  6. Unified description of neutron-, proton- and photon-induced fission cross sections in intermediate energy region

    International Nuclear Information System (INIS)

    Fukahori, Tokio; Iwamoto, Osamu; Chiba, Satoshi

    2003-01-01

    For an accelerator-driven nuclear waste transmutation system, it is very important to estimate sub-criticality of core system for feasibility and design study of the system. The fission cross section in the intermediate energy range has an important role. A program FISCAL has been developed to calculate neutron-, proton- and photon-induced fission cross sections in the energy region from several tens of MeV to 3 GeV. FISCAL adopts the systematics considering experimental data for Ag- 243 Am. It is found that unified description of neutron-, proton- and photon-induced fission cross sections is available. (author)

  7. MCNP6 fragmentation of light nuclei at intermediate energies

    Energy Technology Data Exchange (ETDEWEB)

    Mashnik, Stepan G., E-mail: mashnik@lanl.gov [Los Alamos National Laboratory, Los Alamos, NM 87545 (United States); Kerby, Leslie M. [Los Alamos National Laboratory, Los Alamos, NM 87545 (United States); University of Idaho, Moscow, ID 83844 (United States)

    2014-11-11

    Fragmentation reactions induced on light target nuclei by protons and light nuclei of energies around 1 GeV/nucleon and below are studied with the latest Los Alamos Monte Carlo transport code MCNP6 and with its cascade-exciton model (CEM) and Los Alamos version of the quark-gluon string model (LAQGSM) event generators, version 03.03, used as stand-alone codes. Such reactions are involved in different applications, like cosmic-ray-induced single event upsets (SEU's), radiation protection, and cancer therapy with proton and ion beams, among others; therefore, it is important that MCNP6 simulates them as well as possible. CEM and LAQGSM assume that intermediate-energy fragmentation reactions on light nuclei occur generally in two stages. The first stage is the intranuclear cascade (INC), followed by the second, Fermi breakup disintegration of light excited residual nuclei produced after the INC. Both CEM and LAQGSM account also for coalescence of light fragments (complex particles) up to {sup 4}He from energetic nucleons emitted during INC. We investigate the validity and performance of MCNP6, CEM, and LAQGSM in simulating fragmentation reactions at intermediate energies and discuss possible ways of further improving these codes.

  8. Tensor polarized deuteron targets for intermediate energy physics experiments

    International Nuclear Information System (INIS)

    Meyer, W.; Schilling, E.

    1985-03-01

    At intermediate energies measurements from a tensor polarized deuteron target are being prepared for the following reactions: the photodisintegration of the deuteron, the elastic pion-deuteron scattering and the elastic electron-deuteron scattering. The experimental situation of the polarization experiments for these reactions is briefly discussed in section 2. In section 3 the definitions of the deuteron polarization and the possibilities to determine the vector and tensor polarization are given. Present tensor polarization values and further improvements in this field are reported in section 4. (orig.)

  9. Spin observables in proton-neutron scattering at intermediate energy

    International Nuclear Information System (INIS)

    Spinka, H.

    1986-05-01

    A summary of np elastic scattering spin measurements at intermediate energy is given. Preliminary results from a LAMPF experiment to measure free neutron-proton elastic scattering spin-spin correlation parameters are presented. A longitudinally polarized proton target was used. These measurements are part of a program to determine the neutron-proton amplitudes in a model independent fashion at 500, 650, and 800 MeV. Some new proton-proton total cross sections in pure helicity states (Δσ/sub L/(pp)) near 3 GeV/c are also given. 37 refs., 2 figs

  10. Electron capture in ion-molecule collisions at intermediate energy

    International Nuclear Information System (INIS)

    Kumura, M.

    1986-01-01

    Recent progress of theoretical charge transfer study in ion-molecule collisions at the intermediate energy is reviewed. Concept of close and distant collisions obtained from extensive ion-atom collision studies is identified so that it can be utilized to model two distinct collision processes. For a close collision, explicit representation of the whole collision complex is necessary to describe collision dynamics correctly, while a model potential approach for molecule is appropriate for a distant collision. It is shown that these two distinct models are indeed capable of reproducing experimental charge transfer cross sections. Some remarks for further theoretical study of ion-molecule collisions are also given. 21 refs., 8 figs

  11. Production of intermediate energy beams by high speed rotors

    International Nuclear Information System (INIS)

    Nutt, C.W.; Bale, T.J.; Cosgrove, P.; Kirby, M.J.

    1975-01-01

    A rotor apparatus intended for the study of gas/surface interaction processes is presently nearing completion. The carbon fiber rotors under consideration are constructed with shapes derived from long thin cylindrical rods oriented with the longest axis in a horizontal plane, and spun in a horizontal plane about an axis which is perpendicular to the long axis and passes through the mid-point of the cylinder. The beam formation processes are discussed and rotor diagrams presented. Performance of these types of high speed rotor show them to have a very important future as sources of intermediate energy molecular beams

  12. Ultimate Choice for Energy: The Nuclear Energy

    Directory of Open Access Journals (Sweden)

    Metin Yıldırım*

    2007-06-01

    Full Text Available Increases in the prices of oil, hard coal and natural gas, emergence of Russia as a not reliable resource for the natural and the developments in the security of the energy supply again have been started the nuclear energy as a hotly debated issue in the world. This is also a sensitive topic among the opponents and proponents of the nuclear energy in Turkey. Nuclear energy is very important since it provides about 17 % of the electric energy in the world and is used in industry and medical area. However, Turkey has not declared any policy about this yet, because of the worries about the environmental reasons and has not gained any progress about nuclear energy. First of all, Turkey must use her geothermal, hydropower, hard coal, solar and wind energies. Otherwise, Turkey may find herself in a competition with her neighboring countries

  13. Selected problems in experimental intermediate energy physics. Final technical report, February 1, 1991--January 31, 1994

    International Nuclear Information System (INIS)

    Mayes, B.W.; Hungerford, E.V.; Pinsky, L.S.

    1997-01-01

    A complete description of the research program of the intermediate energy group at the University of Houston may be found in previous progress reports, renewal proposals, and proposals to various accelerator advisory committees. The summaries of activities are presented in the next section. The objectives of the research program are to: (1) investigate selected, forefront problems in experimental intermediate energy physics; (2) educate students in this field of research; and (3) develop the instrumentation necessary to undertake this experimental program. There were three major thrusts of the program: (1) strange particle physics, where a strange quark is embedded in the nuclear medium; (2) muon electro-weak decay, which involves a search for a violation of the standard model of the electro-weak interaction; and (3) measurement of the spin dependent structure function of the neutron and proton

  14. Nuclear energy. Risk or advantage

    International Nuclear Information System (INIS)

    Boettiger, Helmut

    2011-01-01

    Nuclear energy is controversial. But what's all about really in the controversy? It's about more than safty or electricity prices. Nuclear energy is not only a technical or political question, but also a moral, a human. The discussion enter various rational and irrational arguments, beside straightforward arguments various misleading and mendacious exist. The present publication is comprehensively dedicated to the thema of nuclear energy - its pro and contra - and considers its risks and advantages. Thereby the sources of energy, the processes in the nuclear reactor, and the risk potentials (Harrisburg, Chernobyl, Fukushima) are illustratively and reproducibly presented. Extensively the text explains the forms of the radiation, its doses, and the tolerance of it. Also to the theme waste and final disposal an explaining chapter is dedicated and the question for the exit from nuclear energy elucidated. Finally the author appoints with the question ''How considers mankind nuclear energy world-wide'' the international comparison.

  15. Economic analysis of nuclear energy

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Han Myung; Lee, M.K.; Moon, K.H.; Kim, S.S.; Lim, C.Y.; Song, K.D.; Kim, H

    2001-12-01

    The objective of this study is to evaluate the contribution of nuclear energy to the energy use in the economical way, based on the factor survey performed on the internal and external environmental changes occurred recent years. Internal and external environmental changes are being occurred recent years involving with using nuclear energy. This study summarizes the recent environmental changes in nuclear energy such as sustainable development issues, climate change talks, Doha round and newly created electricity fund. This study also carried out the case studies on nuclear energy, based on the environmental analysis performed above. The case studies cover following topics: role of nuclear power in energy/environment/economy, estimation of environmental external cost in electric generation sector, economic comparison of hydrogen production, and inter-industrial analysis of nuclear power generation.

  16. Economic analysis of nuclear energy

    International Nuclear Information System (INIS)

    Lee, Han Myung; Lee, M.K.; Moon, K.H.; Kim, S.S.; Lim, C.Y.; Song, K.D.; Kim, H.

    2001-12-01

    The objective of this study is to evaluate the contribution of nuclear energy to the energy use in the economical way, based on the factor survey performed on the internal and external environmental changes occurred recent years. Internal and external environmental changes are being occurred recent years involving with using nuclear energy. This study summarizes the recent environmental changes in nuclear energy such as sustainable development issues, climate change talks, Doha round and newly created electricity fund. This study also carried out the case studies on nuclear energy, based on the environmental analysis performed above. The case studies cover following topics: role of nuclear power in energy/environment/economy, estimation of environmental external cost in electric generation sector, economic comparison of hydrogen production, and inter-industrial analysis of nuclear power generation

  17. Should we embrace nuclear energy?

    International Nuclear Information System (INIS)

    Nolch, Guy

    2006-01-01

    During his recent tour of North America, Australian Prime Minister John Howard called for a 'full-blooded debate' about the place of nuclear power in the nation's energy mix. 'I have a very open mind on the development of nuclear energy in my own country,' he said. Treasurer Peter Costello said that only economic arguments precluded Australia's move to nuclear energy. 'If it becomes commercial, we should have it,' he said on 23 May. But in reality the 'debate' had already been adjudicated. Three days later the Australian Nuclear Science and Technology Organisation (ANSTO) presented Science Minister Julie Bishop with a report that delivered Costello's economic justification for nuclear power

  18. Energy situation and nuclear power

    Energy Technology Data Exchange (ETDEWEB)

    Megahid, M R [Reactor and Neutron physics Department Nuclear Research Center A.E., Cairo (Egypt)

    1997-12-31

    A brief general review is given concerning the requirements of power throughout history with an indication to the world capital reserves of energy. The energy released from the conversion of mass in chemical and nuclear processes is also discussed with comparative analysis between conventional fuel fired plant and nuclear power plant having the same energy output. The advantages and disadvantages arising from having a nuclear power programme are also discussed. 1 fig.

  19. Nuclear energy, understand the future

    International Nuclear Information System (INIS)

    Bauquis, P.R.; Barre, B.

    2006-01-01

    In spite of its first use for military needs, the nuclear became a substitution energy, especially for the electric power production. For many scientist the nuclear seems to be the main part to the world energy supply in an economic growth context, provided the radioactive wastes problems is solved. From the military origins to the electric power generation, this book explains the technical economical and political aspects of the nuclear energy. (A.L.B.)

  20. Nuclear energy in the future

    International Nuclear Information System (INIS)

    Chaussade, J.P.

    1994-01-01

    Nuclear energy plays a major role in the French economy because of the lack of fossil fuels on the French territory. About 75% of the French electric power is of nuclear origin. This paper gives an analysis of the French public attitude about nuclear energy and the methods used by the nuclear industrialists to better the electro-nuclear image. Communication, advertising and transparency are the best attitudes for a suitable public information and are necessary to reduce the public anxiety after the Chernobyl accident. Television advertising, magazines and organized visits of nuclear installations have allowed to explain the interest of nuclear energy in the environmental reduction of pollutants. However, public information must include the topic about nuclear wastes to remain credible. (J.S.)

  1. Climatic change and nuclear energy

    International Nuclear Information System (INIS)

    Schneider, M.

    2000-08-01

    The data presented in the different chapters lead to show that nuclear energy ids not a sustainable energy sources for the following reasons: investments in nuclear energy account financing that lacks to energy efficiency programmes. The nuclear programmes have negative effects such the need of great electric network, the need of highly qualified personnel, the freezing of innovation in the fields of supply and demand, development of small performing units. The countries resort to nuclear energy are among the biggest carbon dioxide emitters, because big size nuclear power plants lead to stimulate electric power consumption instead of inducing its rational use. Nuclear energy produces only electric power then a part of needs concerns heat (or cold) and when it is taken into account nuclear energy loses its advantages to the profit of cogeneration installations. Finally nuclear energy is a dangerous energy source, difficult to control as the accident occurring at Tokai MURA showed it in 1998. The problem of radioactive wastes is not still solved and the nuclear proliferation constitutes one of the most important threat at the international level. (N.C.)

  2. Energy from nuclear fission()

    Science.gov (United States)

    Ripani, M.

    2015-08-01

    The main features of nuclear fission as physical phenomenon will be revisited, emphasizing its peculiarities with respect to other nuclear reactions. Some basic concepts underlying the operation of nuclear reactors and the main types of reactors will be illustrated, including fast reactors, showing the most important differences among them. The nuclear cycle and radioactive-nuclear-waste production will be also discussed, along with the perspectives offered by next generation nuclear assemblies being proposed. The current situation of nuclear power in the world, its role in reducing carbon emission and the available resources will be briefly illustrated.

  3. Nuclear energy: a vital energy choice

    International Nuclear Information System (INIS)

    Pecqueur, Michel

    1980-01-01

    Speaking from the platform of the XIIIth annual session of the International Atomic Energy Agency, at New Delhi, AEC managing director Michel Pecqueur made a solemn appeal to the world community for the decisions which are needed on energy. The present energy crisis can lead the world to a recession and be a factor in grave troubles for peace and balance in the world. The crisis cannot be resolved without accrued recourse to the use of nuclear energy. Two essential themes were outlined: the development of nuclear energy in the world, and the increased reduction of proliferation risks. In concluding, he expressed the hop that with a greater effort in information media, the nuclear fact-of-life would be better accepted by the general public in future, for it is there that lies a brake which may hinder nuclear energy development [fr

  4. Finnish energy outlook - role of nuclear energy

    International Nuclear Information System (INIS)

    Santaholma, J.

    2004-01-01

    In this presentation author deals with production a consumption of electricity in the Finland. New nuclear power partly covers additional electricity demand and replaces retiring power plants in coming decades after 2010. Nuclear energy secures stable, economical and predictable electricity price as well as operation environment for the electricity intensive industry for coming decades. Nuclear energy also reduces the dependence on electricity import of Finland. Nuclear energy partly enables, together with renewable, fulfilment of Finland's Kyoto commitments. Solutions for nuclear waste management are a condition sine qua non for sound nuclear programmes. Funding has been arranged. All this is carried out in Finland in a transparent way and in accordance with any democratic requirements. (author)

  5. Monte Carlo calculations for intermediate-energy standard neutron field

    International Nuclear Information System (INIS)

    Joneja, O.P.; Subbukutty, K.; Iyengar, S.B.D.; Navalkar, M.P.

    Intermediate-Energy Standard Neutron Field (ISNF) which produces a well characterised spectrum in the energy range of interest for fast reactors including breeders, has been set up at NBS using thin enriched 235 U fission sources. A proposal has been made for setting up a similar facility at BARC using however, easily available natural U instead of enriched U sources, to start with. In order to simulate the neutronics of such a facility Monte Carlo method of calculations has been adopted and developed. The results of these calculations have been compared with those of NBS and it is found that there may be a maximum difference of 10% in spectrum characteristics for the two cases of using thick and thin fission sources. (K.B.)

  6. Nuclear spin-orbit splitting from an intermediate Δ excitation

    International Nuclear Information System (INIS)

    Ohta, K.; Terasawa, T.; Tohyama, M.

    1980-01-01

    The strength of the single particle spin-orbit potential is calculated from the two pion exchange box diagrams involving an intermediate Δ(1232) resonance excitation by taking account of the exclusion principle for the intermediate nucleon states. The effect of the rho meson is also considered. The predicted strength is found to account for a substantial part of the empirical spin-orbit splittings

  7. Innovative nuclear energy systems roadmap

    International Nuclear Information System (INIS)

    2007-12-01

    Developing nuclear energy that is sustainable, safe, has little waste by-product, and cannot be proliferated is an extremely vital and pressing issue. To resolve the four issues through free thinking and overall vision, research activities of 'innovative nuclear energy systems' and 'innovative separation and transmutation' started as a unique 21st Century COE Program for nuclear energy called the Innovative Nuclear Energy Systems for Sustainable Development of the World, COE-INES. 'Innovative nuclear energy systems' include research on CANDLE burn-up reactors, lead-cooled fast reactors and using nuclear energy in heat energy. 'Innovative separation and transmutation' include research on using chemical microchips to efficiently separate TRU waste to MA, burning or destroying waste products, or transmuting plutonium and other nuclear materials. Research on 'nuclear technology and society' and 'education' was also added in order for nuclear energy to be accepted into society. COE-INES was a five-year program ending in 2007. But some activities should be continued and this roadmap detailed them as a rough guide focusing inventions and discoveries. This technology roadmap was created for social acceptance and should be flexible to respond to changing times and conditions. (T. Tanaka)

  8. Program TOTELA calculating basic cross sections in intermediate energy region by using systematics

    International Nuclear Information System (INIS)

    Fukahori, Tokio; Niita, Koji

    2000-01-01

    Program TOTELA can calculate neutron- and proton-induced total, elastic scattering and reaction cross sections and angular distribution of elastic scattering in the intermediate energy region from 20 MeV to 3 GeV. The TOTELA adopts the systematics modified from that by Pearlstein to reproduce the experimental data and LA150 evaluation better. The calculated results compared with experimental data and LA150 evaluation are shown in figures. The TOTELA results can reproduce those data almost well. The TOTELA was developed to fill the lack of experimental data of above quantities in the intermediate energy region and to use for production of JENDL High Energy File. In the case that there is no experimental data of above quantities, the optical model parameters can be fitted by using TOTELA results. From this point of view, it is also useful to compare the optical model calculation by using RIPL with TOTELA results, in order to verify the parameter quality. Input data of TOTELA is only atomic and mass numbers of incident particle and target nuclide and input/output file names. The output of TOTELA calculation is in ENDF-6 format used in the intermediate energy nuclear data files. It is easy to modify the main routine by users. Details are written in each subroutine and main routine

  9. Intermediate evaluation of USAID/Cairo energy policy planning project

    Energy Technology Data Exchange (ETDEWEB)

    Wilbanks, T.J.; Wright, S.B. (Oak Ridge National Lab., TN (United States)); Barron, W.F. (Hong Kong Univ. (Hong Kong)); Kamel, A.M. (Ain Shams Univ., Cairo (Egypt)); Santiago, H.T. (USDOE, Washington, DC (United States))

    1992-01-01

    Three years ago, a team from the Oak Ridge National Laboratory and the Oak Ridge Associated Universities, supplemented by an expert from the US Department of Energy and a senior Egyptian energy professional, carried out what was termed an intermediate evaluation'' of a major energy policy project in Egypt. Supported by USAID/Cairo, the project had concentrated on developing and strengthening an Organization for Energy Planning (OEP) within the Government of India, and it was actually scheduled to end less than a year after this evaluation. The evaluation was submitted to USAID/Cairo and circulated elsewhere in the US Agency for International Development and the Government of Egypt as an internal report. Over the next several years, the USAID energy planning project ended and the functions performed by OEP were merged with planning capabilities in the electric power sector. Now that the major issues addressed by the evaluation report have been resolved, we are making it available to a broader audience as a contribution to the general literature on development project evaluation and institution-building.

  10. Intermediate evaluation of USAID/Cairo energy policy planning project

    Energy Technology Data Exchange (ETDEWEB)

    Wilbanks, T.J.; Wright, S.B. [Oak Ridge National Lab., TN (United States); Barron, W.F. [Hong Kong Univ. (Hong Kong); Kamel, A.M. [Ain Shams Univ., Cairo (Egypt); Santiago, H.T. [USDOE, Washington, DC (United States)

    1992-09-01

    Three years ago, a team from the Oak Ridge National Laboratory and the Oak Ridge Associated Universities, supplemented by an expert from the US Department of Energy and a senior Egyptian energy professional, carried out what was termed an ``intermediate evaluation`` of a major energy policy project in Egypt. Supported by USAID/Cairo, the project had concentrated on developing and strengthening an Organization for Energy Planning (OEP) within the Government of India, and it was actually scheduled to end less than a year after this evaluation. The evaluation was submitted to USAID/Cairo and circulated elsewhere in the US Agency for International Development and the Government of Egypt as an internal report. Over the next several years, the USAID energy planning project ended and the functions performed by OEP were merged with planning capabilities in the electric power sector. Now that the major issues addressed by the evaluation report have been resolved, we are making it available to a broader audience as a contribution to the general literature on development project evaluation and institution-building.

  11. 76 FR 67717 - Nuclear Energy Advisory Committee

    Science.gov (United States)

    2011-11-02

    ... DEPARTMENT OF ENERGY Nuclear Energy Advisory Committee AGENCY: Department of Energy, Office of Nuclear Energy. ACTION: Notice of open meeting. SUMMARY: This notice announces a meeting of the Nuclear...: [email protected]nuclear.energy.gov . SUPPLEMENTARY INFORMATION: Background: The Nuclear Energy Advisory...

  12. 77 FR 26274 - Nuclear Energy Advisory Committee

    Science.gov (United States)

    2012-05-03

    ... DEPARTMENT OF ENERGY Nuclear Energy Advisory Committee AGENCY: Department of Energy, Office of Nuclear Energy. ACTION: Notice of open meeting. SUMMARY: This notice announces a meeting of the Nuclear[email protected]nuclear.energy.gov . SUPPLEMENTARY INFORMATION: Background: The Nuclear Energy Advisory Committee...

  13. 78 FR 70932 - Nuclear Energy Advisory Committee

    Science.gov (United States)

    2013-11-27

    ... DEPARTMENT OF ENERGY Nuclear Energy Advisory Committee AGENCY: Office of Nuclear Energy, Department of Energy. ACTION: Notice of open meeting. SUMMARY: This notice announces a meeting of the Nuclear[email protected]nuclear.energy.gov . SUPPLEMENTARY INFORMATION: Background: The Nuclear Energy Advisory Committee (NEAC...

  14. 75 FR 67351 - Nuclear Energy Advisory Committee

    Science.gov (United States)

    2010-11-02

    ... DEPARTMENT OF ENERGY Nuclear Energy Advisory Committee AGENCY: Office of Nuclear Energy, Department of Energy. ACTION: Notice of open meeting. SUMMARY: This notice announces a meeting of the Nuclear... [email protected]nuclear.energy.gov . SUPPLEMENTARY INFORMATION: Background: The Nuclear Energy Advisory...

  15. 75 FR 13269 - Nuclear Energy Advisory Committee

    Science.gov (United States)

    2010-03-19

    ... DEPARTMENT OF ENERGY Nuclear Energy Advisory Committee AGENCY: Department of Energy, Office of Nuclear Energy. ACTION: Notice of open meeting. SUMMARY: This notice announces a meeting of the Nuclear[email protected]nuclear.energy.gov . SUPPLEMENTARY INFORMATION: Background: The Nuclear Energy Advisory Committee...

  16. Nuclear energy in question

    International Nuclear Information System (INIS)

    Simon, D.N.; Carvalho, J.F. de; Goldemberg, J.; Menezes, L.C.; Rosa, L.P.; Oliveira, R.G. de.

    1981-01-01

    The basic requirements demanded for the physical protection of nuclear operational units, is established. These units can be, production, utilization, processing, reprocessing, handling, transport or storage of materials of interesting to Brazilian Nuclear Program. (E.G.) [pt

  17. Expert judgment for nuclear energy

    International Nuclear Information System (INIS)

    Choi, Young Sung; Lee, Sun Ho; Lee, Byong Whi

    2000-01-01

    Public perception on nuclear energy is much influenced by subjective impressions mostly formed through sensational and dramatic news of mass media or anti-nuclear groups. However, nuclear experts, those who have more relevant knowledge and information about nuclear energy, may have reasonable opinion based on scientific facts or inferences. Thus their opinion and consensus should be examined and taken into account during the process of nuclear energy policy formulation. For the purpose of eliciting experts' opinion, the web-based on-line survey system (eBOSS) was developed. Using the survey system, experts' views on nuclear energy were tallied, analyzed and compared with the public's. Based on the survey results, the paper suggests some recommendations about the future direction of the public information program in Korea

  18. Nuclear energy promise or peril?

    International Nuclear Information System (INIS)

    Van der Zwaan, B.C.C.; Hill, C.R.; Ripka, G.

    1999-01-01

    Nuclear energy will inevitably become an important worldwide issue in the 21. century. The authors are authorities in their own fields and their contributions have been read, discussed and criticized by a wide, international group of experts. The today status of nuclear power is exposed, the authors weigh the pros and cons of nuclear energy. In a near future nuclear energy could play a major role in preventing climate change and atmospheric pollution. The main challenges that put at risk nuclear energy are: nuclear safety, radiation protection, the management of radioactive wastes, the problem of plutonium stocks and the risk of proliferation. For each of these open questions, a specialist makes a precise survey of the situation

  19. Nuclear: an energy in territories

    International Nuclear Information System (INIS)

    Le Ngoc, Boris

    2016-01-01

    After having briefly outlined that introducing a relationship between geography and nuclear energy is a quite recent approach, and by often quoting a researcher (Teva Meyer) specialised in Swedish energy issues, the author briefly discusses how nuclear energy structures territories through meshing and 'polarisation' effects, and economic and social impacts. He also discusses whether territories then become dependent on nuclear activity, what happens when a nuclear plant stops, how the existence of a nuclear plant becomes an identity market for a territory, and how material flows also deal with geography. In the last part, the author notices that in Germany, nuclear industry is considered as an industry like any other one. He finally outlines that geography could be useful to achieve energy transition

  20. Nuclear energy facing the future

    International Nuclear Information System (INIS)

    Laue, H.J.

    1982-01-01

    In conjunction with the 25th anniversary of the establishment of the IAEA, the contribution that nuclear energy can make to future world energy requirements is discussed and nuclear power generation statistics examined with especial reference to data on capacity and outages. (U.K.)

  1. Nuclear energy: basics, present, future

    Directory of Open Access Journals (Sweden)

    Ricotti M. E

    2013-06-01

    Full Text Available The contribution is conceived for non-nuclear experts, intended as a synthetic and simplified overview of the technology related to energy by nuclear fission. At the end of the paper, the Reader will find a minimal set of references, several of them on internet, useful to start deepening the knowledge on this challenging, complex, debated albeit engaging energy source.

  2. Social Institutions and Nuclear Energy

    Science.gov (United States)

    Weinberg, Alvin M.

    1972-01-01

    Nuclear technologists can offer an all but infinite source of relatively cheap and clean energy" but society must decide whether the price of eternal vigilance needed to ensure proper and safe operation of its nuclear energy system" is worth the benefits. (Author/AL)

  3. Symmetry energy in nuclear surface

    International Nuclear Information System (INIS)

    Danielewicz, P.; Lee, Jenny

    2009-01-01

    Interplay between the dependence of symmetry energy on density and the variation of nucleonic densities across nuclear surface is discussed. That interplay gives rise to the mass dependence of the symmetry coefficient in an energy formula. Charge symmetry of the nuclear interactions allows to introduce isoscalar and isovector densities that are approximately independent of the magnitude of neutron-proton asymmetry. (author)

  4. Development of nuclear energy and nuclear policy in China

    International Nuclear Information System (INIS)

    You Deliang

    1993-11-01

    Status of nuclear power development in China, nuclear policy and nuclear power programme are described. Issues regarding nuclear fuel cycle system, radioactive waste management and international cooperation in the field of peaceful use of nuclear energy are discussed

  5. Nuclear Energy in Perspective

    International Nuclear Information System (INIS)

    1989-01-01

    This report provides the interested non-specialist reader with insights on five major issues associated with nuclear power generation: nuclear development and economics, protection of man and the environment, power plant safety, radioactive waste management and compensation for damage from a nuclear accident

  6. Nuclear energy - myth and reality

    Energy Technology Data Exchange (ETDEWEB)

    Sinclair, Michael C. [Illinois Dept. of Nuclear Safety, IL (United States). Emergency Planning Section

    1997-12-31

    Socio-political aspects of the use of nuclear energy and radiation are presented. The behaviour of the general population, and many of the world`s political organizations who still resist or reject nuclear energy as a viable resource is discussed. The benefits from the production of electricity, medical diagnostics and treatment, engineering accomplishments, and scientific research applications involving the use of nuclear technology and radioactive materials are emphasized

  7. Nuclear energy - myth and reality

    International Nuclear Information System (INIS)

    Sinclair, Michael C.

    1997-01-01

    Socio-political aspects of the use of nuclear energy and radiation are presented. The behaviour of the general population, and many of the world's political organizations who still resist or reject nuclear energy as a viable resource is discussed. The benefits from the production of electricity, medical diagnostics and treatment, engineering accomplishments, and scientific research applications involving the use of nuclear technology and radioactive materials are emphasized

  8. Nuclear energy: considerations about nuclear trade

    International Nuclear Information System (INIS)

    Goes Fischer, M.D. de.

    1988-01-01

    A general view of historical aspects of nuclear energy and the arrangements to assure its use for peaceful purposes are presented. Then the internal character of nuclear energy in a juride context is demonstrated; some consideration about the international organizations and conventions and the Brazilian Legislation in the nuclear area are examined. It also deals with the political aspects of nuclear trade and the function of IAEA in this are. Furthermore the restrictions imposed by Non-Proliferation Treaty-NPT, the objectures of the Tlatelolco Treaty and ''London Club'' guidelines. Afterwards the bilateral cooperation under taken by countries and its agreements are discussed. Besides some aspects of agreements made between United States, France Germany and Brazil are discussed [pt

  9. Open discussions on nuclear energy

    International Nuclear Information System (INIS)

    1978-01-01

    In the first part, economic prospects in the world and in the European Community and their repercussions on energy demand are examined. Supply structure and growth scenari are outlined. Present and potential contribution of nuclear energy to energy supply is developed. The pros and cons are given. In the second part is examined how the production and use of various form of energy including nuclear energy, can affect health and the environment, with special reference to waste of all kinds. Safety problems and risk of accidents are examined in both non nuclear and nuclear sectors. Prospects for a low energy society and economic and social implications of the use of new forms of energy are also discussed

  10. Inclusive quasielastic neutrino reactions in 12C and 16O at intermediate energies

    International Nuclear Information System (INIS)

    Singh, S.K.; Oset, E.

    1993-01-01

    Inclusive quasielastic neutrino (antineutrino) reactions on 12 C and 16 O at intermediate energies (50< E<400 MeV) are studied to investigate the effects of the nuclear medium on the total cross section and the energy spectrum of the outgoing leptons. The calculations are done in the local density approximation and various nuclear effects like Pauli blocking, Fermi motion, and strong-interaction renormalizations due to the presence of nucleons are taken into account. The corrections due to Coulomb effects are included which have been hitherto neglected in inclusive reactions. The results presented here are applicable to the inclusive reactions with neutrino beams planned to look for neutrino oscillations in the Los Alamos experiments or the experiments with underground detectors looking for atmospheric or solar flare neutrinos

  11. Progress in applyiong the FKK multistep reaction theory to intermediate-energy data evaluation

    International Nuclear Information System (INIS)

    Chadwick, M.B.; Young, P.G.

    1994-01-01

    Recent developments to the physics modeling in the FKK-GNASH code system are reviewed. We describe modifications to include a linking of multistep direct and multistep compound processes, which are important when the incident energy is less than about 30 MeV. A model for multiple preequilibrium emission is given, and compared with experimental measurements of proton reactions on 90 Zr at 160 MeV. We also give some preliminary observations concerning FKK calculations which use both normal and non-normal DWBA matrix elements. We describe the application of the FKK-GNASH code to a range of nuclear data applications, including intermediate energy reactions of importance in the accelerator transmutation of waste, and fast neutron and proton cancer radiation treatment. We outline areas where further work is needed for the accurate modeling of nuclear reactions using the FKK theory

  12. Modelling interaction cross sections for intermediate and low energy ions

    International Nuclear Information System (INIS)

    Toburen, L.H.; Shinpaugh, J.L.; Justiniano, E.L.B.

    2002-01-01

    When charged particles slow in tissue they undergo electron capture and loss processes than can have profound effects on subsequent interaction cross sections. Although a large amount of data exists for the interaction of bare charged particles with atoms and molecules, few experiments have been reported for these 'dressed' particles. Projectile electrons contribute to an impact-parameter-dependent screening of the projectile charge that precludes straightforward scaling of energy loss cross sections from those of bare charged particles. The objective of this work is to develop an analytical model for the energy-loss-dependent effects of screening on differential ionisation cross sections that can be used in track structure calculations for high LET ions. As a first step a model of differential ionisation cross sections for bare ions has been combined with a simple screening model to explore cross sections for intermediate and low energy dressed ions in collisions with atomic and molecular gas targets. The model is described briefly and preliminary results compared to measured electron energy spectra. (author)

  13. Multifragmentation in intermediate energy 129Xe-induced heavy-ion reactions

    International Nuclear Information System (INIS)

    Tso, Kin.

    1996-05-01

    The 129 Xe-induced reactions on nat Cu, 89 Y, 165 Ho, and 197 Au at bombarding energies of E/A = 40 ampersand 60 MeV have been studied theoretically and experimentally in order to establish the underlying mechanism of multifragmentation at intermediate energy heavy-Ion collisions. Nuclear disks formed in central heavy-ion collisions, as simulated by means of Boltzmann-like kinetic equations, break up into several fragments due to a new kind of Rayleigh-like surface instability. A sheet of liquid, stable in the limit of non-interacting surfaces, is shown to become unstable due to surface-surface interactions. The onset of this instability is determined analytically. A thin bubble behaves like a sheet and is susceptible to the surface instability through the crispation mode. The Coulomb effects associated with the depletion of charges in the central cavity of nuclear bubbles are investigated. The onset of Coulomb instability is demonstrated for perturbations of the radial mode. Experimental intermediate-mass-fragment multiplicity distributions for the 129 Xe-induced reactions are shown to be binomial at each transverse energy. From these distributions, independent of the specific target, an elementary binary decay probability p can be extracted that has a thermal dependence. Thus it is inferred that multifragmentation is reducible to a combination of nearly independent emission processes. If sequential decay is assumed, the increase of p with transverse energy implies a contraction of the emission time scale. The sensitivity of p to the lower Z threshold in the definition of intermediate-mass-fragments points to a physical Poisson simulations of the particle multiplicities show that the weak auto-correlation between the fragment multiplicity and the transverse energy does not distort a Poisson distribution into a binomial distribution. The effect of device efficiency on the experimental results has also been studied

  14. Multifragmentation in intermediate energy 129Xe-induced heavy-ion reactions

    Energy Technology Data Exchange (ETDEWEB)

    Tso, Kin [Univ. of California, Berkeley, CA (United States)

    1996-05-01

    The 129Xe-induced reactions on natCu, 89Y, 165Ho, and 197Au at bombarding energies of E/A = 40 & 60 MeV have been studied theoretically and experimentally in order to establish the underlying mechanism of multifragmentation at intermediate energy heavy-Ion collisions. Nuclear disks formed in central heavy-ion collisions, as simulated by means of Boltzmann-like kinetic equations, break up into several fragments due to a new kind of Rayleigh-like surface instability. A sheet of liquid, stable in the limit of non-interacting surfaces, is shown to become unstable due to surface-surface interactions. The onset of this instability is determined analytically. A thin bubble behaves like a sheet and is susceptible to the surface instability through the crispation mode. The Coulomb effects associated with the depletion of charges in the central cavity of nuclear bubbles are investigated. The onset of Coulomb instability is demonstrated for perturbations of the radial mode. Experimental intermediate-mass-fragment multiplicity distributions for the 129Xe-induced reactions are shown to be binomial at each transverse energy. From these distributions, independent of the specific target, an elementary binary decay probability p can be extracted that has a thermal dependence. Thus it is inferred that multifragmentation is reducible to a combination of nearly independent emission processes. If sequential decay is assumed, the increase of p with transverse energy implies a contraction of the emission time scale. The sensitivity of p to the lower Z threshold in the definition of intermediate-mass-fragments points to a physical Poisson simulations of the particle multiplicities show that the weak auto-correlation between the fragment multiplicity and the transverse energy does not distort a Poisson distribution into a binomial distribution. The effect of device efficiency on the experimental results has also been studied.

  15. Proton induced fission of {sup 232}Th at intermediate energies

    Energy Technology Data Exchange (ETDEWEB)

    Gikal, K. B., E-mail: kgikal@mail.ru; Kozulin, E. M.; Bogachev, A. A. [JINR, Flerov Laboratory of Nuclear Reactions (Russian Federation); Burtebaev, N. T.; Edomskiy, A. V. [Institute of Nuclear Physics of Ministry of Energy of the Republic of Kazakhstan (Kazakhstan); Itkis, I. M.; Itkis, M. G.; Knyazhev, G. N. [JINR, Flerov Laboratory of Nuclear Reactions (Russian Federation); Kovalchuk, K. V.; Kvochkina, T. N. [Institute of Nuclear Physics of Ministry of Energy of the Republic of Kazakhstan (Kazakhstan); Piasecki, E. [Heavy Ion Laboratory of Warsaw University (Poland); Rubchenya, V. A. [University of Jyväskylä, Department of Physics (Finland); Sahiev, S. K. [Institute of Nuclear Physics of Ministry of Energy of the Republic of Kazakhstan (Kazakhstan); Trzaska, W. H. [University of Jyväskylä, Department of Physics (Finland); Vardaci, E. [INFN Napoli, Dipartimento di Scienze Fisiche dell’Università di Napoli (Italy)

    2016-12-15

    The mass-energy distributions and cross sections of proton-induced fission of {sup 232}Th have been measured at the proton energies of 7, 10, 13, 20, 40, and 55 MeV. Experiments were carried out at the proton beam of the K-130 cyclotron of the JYFL Accelerator Laboratory of the University of Jyväskylä and U-150m cyclotron of the Institute of Nuclear Physics, Ministry of Energy of the Republic of Kazakhstan. The yields of fission fragments in the mass range A = 60–170 a.m.u. have been measured up to the level of 10−4%. The three humped shape of the mass distribution up has been observed at higher proton energies. The contribution of the symmetric component grows up with increasing proton incident energy; although even at 55 MeV of proton energy the shoulders in the mass energy distribution clearly indicate the asymmetric fission peaks. Evolution of shell structure was observed in the fission fragment mass distributions even at high excitation energy.

  16. Nuclear energy and international cooperation

    International Nuclear Information System (INIS)

    Oshima, Keiichi

    1981-01-01

    There is no need to emphasize that nuclear energy cannot be developed without international cooperation at either the industrial or the academic level. In the meanwhile, there have been some marked political, economic and social changes in recent years which are posing constraints to the international cooperation in nuclear energy. The problems and constraints impeding nuclear power programs cannot be overcome by only one nation; international cooperation with common efforts to solve the problems is essential. Nuclear energy is different from fossil energy resources in that it is highly technology-intensive while others are resource-intensive. International cooperation in technology has an entirely different importance in the field of nuclear energy. Educational institutions will play a role in a new era of the international cooperation. (Mori, K.)

  17. Nuclear energy; Le nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-07-01

    This digest document was written by members of the union of associations of ex-members and retired people of the Areva group (UARGA). It gives a comprehensive overview of the nuclear industry world, starting from radioactivity and its applications, and going on with the fuel cycle (front-end, back-end, fuel reprocessing, transports), the nuclear reactors (PWR, BWR, Candu, HTR, generation 4 systems), the effluents from nuclear facilities, the nuclear wastes (processing, disposal), and the management and safety of nuclear activities. (J.S.)

  18. Periodic inspections of lightning protection systems in intermediate storage facilities of nuclear technological plants

    International Nuclear Information System (INIS)

    Witzel, Andre; Schulz, Olav

    2013-01-01

    Especially for nuclear technological plants, periodic inspections of lightning protection systems are of great importance. This article shows the sequence of maintenance programs using the examples of the intermediate storage facilities of the nuclear technological plants Grohnde and Unterweser as well as the central intermediate storage facility in Gorleben and gives a description of the extensive measures of inspecting the external and internal lightning protection and the global earth termination system.

  19. Faddeev and Glauber calculations at intermediate energies in a model for n+d scattering

    International Nuclear Information System (INIS)

    Elster, Ch.; Lin, T.; Gloeckle, W.; Jeschonnek, S.

    2008-01-01

    Obtaining cross sections for nuclear reactions at intermediate energies based on the Glauber formulation has a long tradition. Only recently the energy regime of a few hundred MeV has become accessible to ab initio Faddeev calculations of three-body scattering. In order to go to higher energies, the Faddeev equation for three-body scattering is formulated and directly solved without employing a partial wave decomposition. In the simplest form the Faddeev equation for interacting scalar particles is a three-dimensional integral equation in five variables, from which the total cross section, the cross sections for elastic scattering and breakup reactions, as well as differential cross sections are obtained. The same observables are calculated based on the Glauber formulation. The first order Glauber calculation and the Glauber rescattering corrections are compared in detail with the corresponding terms of the Faddeev multiple scattering series for projectile energies between 100 MeV and 2 GeV

  20. Nuclear energy and sustainable development

    International Nuclear Information System (INIS)

    Arts, F.; De Ruiter, W.; Turkenburg, W.C.

    1994-01-01

    The purposes of the title workshop were to exchange ideas on the possible impact of nuclear energy on the sustainable development of the society, to outline the marginal conditions that have to be fulfilled by nuclear energy technology to fit in into sustainable development, to asses and determine the differences or agreements of the workshop participants and their argumentations, and to determine the part that the Netherlands could or should play with respect to a further development and application of nuclear energy. 35 Dutch experts in the field of energy and environment attended the workshop which is considered to be a success. It is recommended to organize a follow-up workshop

  1. Spin effects in intermediate-energy heavy-ion collisions

    International Nuclear Information System (INIS)

    Xu Jun; Li Baoan; Xia Yin; Shen Wenqing

    2014-01-01

    In this paper, we report and extend our recent work where the nucleon spin-orbit interaction and its spin degree of freedom were introduced explicitly for the first time in the isospin-dependent Boltzmann-Uehling-Uhlenbeck transport model for heavy-ion reactions. Despite of the significant cancellation of the time-even and time-odd spin-related mean-field potentials from the spin-orbit interaction,an appreciable local spin polarization is observed in heavy-ion collisions at intermediate energies because of the dominating role of the time-odd terms. It is also found that the spin up-down differential transverse flow in heavy-ion collisions is a useful probe of the strength, density dependence, and isospin dependence of the in-medium spin-orbit interaction, and its magnitude is still considerable even at smaller systems. (authors)

  2. Nucleon charge-exchange reactions at intermediate energy

    International Nuclear Information System (INIS)

    Alford, W.P.; Spicer, B.M.

    1997-01-01

    An historical review of the development of ideas pertaining to Gamow-Teller giant resonances is given, and a description of the emergence of techniques for the study of charge exchange reactions - particularly the technical advances which yielded the recent volume of new date. The present status of charge exchange reactions is reviewed and assessed. Evidence is presented from the 14 C(p,n) reaction for the dominance of the spin-isospin component of the nucleon-nucleon interaction in intermediate energy reactions. In (p,n) reactions the Gamow-Teller giant resonance dominates the spectra, with higher multipoles contributing. By contrast, in (n,p) reactions in the heavier nuclei, the Gamow-Teller transitions are substantially Pauli-blocked and the spin dipole resonance dominates, with contributions from higher multipoles. Discussions of the multipole decomposition process, used to obtain from the data the contributions of the different multipoles, and the contributions of the multipoles, are given

  3. Pitfalls in looking for color transparency at intermediate energies

    International Nuclear Information System (INIS)

    Frankfurt, L.L.; Strikman, M.I.; Zhalov, M.B.

    1994-01-01

    The problems and uncertainties in the search for color transparency at intermediate Q 2 are considered. We show that conventional (optical) model [distorted wave impulse approximation (DWIA)] predicts a substantial change of the transparency, T, with Q 2 in the kinematics of the Ne-18 (e,e ' p) experiment, while the color transparency phenomenon may lead to nearly Q 2 independent T. In the case of A(p,2p) reaction we demonstrate that the conventional optical model describes well the 1 GeV A(p,2p) data but not the transparency observed at higher energies. We find also that DWIA (with or without color transparency) predicts strong dependence of T on the momentum of the struck nucleon which is consistent with the pattern of the Brookhaven National Laboratory A(p,2p) data at p N =6 GeV/c and 10 GeV/c

  4. On selection rules and inelastic electron scattering at intermediate energies

    International Nuclear Information System (INIS)

    Nuroh, K.

    1986-12-01

    Correlation effects are included in the Bethe-Born theory for the generalized oscillator strength of inelastic scattering of electrons on atoms. The formulation is such as to allow for the calculation of relative line strengths of multiplets. It is used to analyze line strengths of the 4d → 4f transition in La 3+ and Ce 4+ within LS-coupling. The analysis indicates that only singlet states of the intermediate 4d 9 4f configuration are allowed. Calculated line strengths are compared with a recent core electron energy loss spectra of metallic La and tetravalent CeO 2 and there is an overall qualitative agreement between theory and experiment. (author). 11 refs, 4 figs, 2 tabs

  5. Outlook for nuclear fission energy

    International Nuclear Information System (INIS)

    Anderson, T.D.

    1978-01-01

    The electric utility industry has made a substantial commitment to nuclear power. The industrial capability to produce nuclear plants is large and well established. Nevertheless, nuclear energy in the United States is at the crossroad, and the direction it will take is not at all assured. The postponements, cancellations, and lack of orders for new plants over the past three years raise some serious questions about the future. The present problems of nuclear energy are primarily nontechnical in nature. If the nontechnical issues can be resolved, the future for nuclear looks bright indeed. The LWR and other converters could provide strong competition for coal and other electric power options for a half century or more. If development goals are met, the nuclear breeder offers the prospect of a very large supply of energy at stabilized prices over a time span of centuries

  6. The future of nuclear energy

    International Nuclear Information System (INIS)

    Schmidt-Kuester, W.J.

    2000-01-01

    Europe is one of the world leaders in nuclear technology advancement. The development of spent fuel reprocessing is but one example of this. This process continues today with the development by France and Germany of the European Pressurised-Water Reactor. Nuclear research and development work is continuing in Europe, and must be continued in the future, if Europe is to retain its world leadership position in the technological field and on the commercial front. If we look at the benefits, which nuclear energy has to offer, in economic and environmental terms, 1 support the view that nuclear is an energy source whose time has come again. This is not some fanciful notion or wishful thinking. There is clear evidence of greater long-term reliance on nuclear energy. Perhaps we do not see new nuclear plants springing up in Europe, but we do see ambitious nuclear power development programmes underway in places like China, Japan and Korea. Closer to home, Finland is seriously considering the construction of a new nuclear unit. Elsewhere, in Europe and the US, we see a growing trend towards nuclear plant life extension and plant upgrades geared towards higher production capacity. These are all signs that nuclear will be around for a long time to come and that nuclear will indeed have a future

  7. Nuclear Energy and European Union

    International Nuclear Information System (INIS)

    Picamal, B.

    2010-01-01

    The interest shown by the European Institutions in the energy debates, in which the nuclear energy is included as a key component within the energy mix, is obvious. Climate change and energy supply have pushed some countries to publicly express their interest for developing the nuclear energy. These positions are however in contradiction with some others within the European Union which are a lot more critical towards this type of energy and where face-out policies still prevail. Despite the fact that the use of the nuclear energy will remain within the competence of each Member State, the European Union will continue to play a prominent role in the development of an energy strategy based on a low carbon economy. (Author)

  8. Nuclear Energy Research in Europe

    International Nuclear Information System (INIS)

    Schenkel, Roland; Haas, Didier

    2008-01-01

    The energy situation in Europe is mainly characterized by a growth in consumption, together with increasing import dependence in all energy resources. Assuring security of energy supply is a major goal at European Union level, and this can best be achieved by an adequate energy mix, including nuclear energy, producing now 32 % of our electricity. An increase of this proportion would not only improve our independence, but also reduce greenhouse gases emissions in Europe. Another major incentive in favor of nuclear is its competitiveness, as compared to other energy sources, and above all the low dependence of the electricity price on variation of the price of the raw material. The European Commission has launched a series of initiatives aiming at better coordinating energy policies and research. Particular emphasis in future European research will be given on the long-term sustainability of nuclear energy through the development of fast reactors, and to potential industrial heat applications. (authors)

  9. Nuclear energy - the future climate

    International Nuclear Information System (INIS)

    Ash, Eric Sir

    2000-01-01

    In June 1999, a report entitled Nuclear Energy-The Future Climate was published and was the result of a collaboration between the Royal Society and the Royal Academy of Engineering. The report was the work of a group of nine people, made up of scientists, engineers and an economist, whose purpose was to attempt a new and objective look at the total energy scene and specifically the future role of nuclear energy. This paper discusses the findings of that report. (author)

  10. Nuclear energy: potentiality and implications

    International Nuclear Information System (INIS)

    Bahgat, Gawdat

    2008-01-01

    After a discussion about a broad definition of energy security and about the main challenges facing a potential nuclear renaissance, the article analyses how the European Union and the United States have addressed these challenges. There is no doubt that nuclear power will remain an important component of global energy mix, but it should not be seen as a panacea to the flows in the global energy markets [it

  11. Future of nuclear energy research

    International Nuclear Information System (INIS)

    Fuketa, Toyojiro

    1989-09-01

    In spite of the easing of worldwide energy supply and demand situation in these years, we believe that research efforts towards the next generation nuclear energy are indispensably necessary. Firstly, the nuclear colleagues believe that nuclear energy is the best major energy source from many points of view including the global environmental viewpoint. Secondly, in the medium- and long-range view, there will once again be a high possibility of a tight supply and demand situation for oil. Thirdly, nuclear energy is the key energy source to overcome the vulnerability of the energy supply structure in industrialized countries like Japan where virtually no fossil energy source exists. In this situation, nuclear energy is a sort of quasi-domestic energy as a technology-intensive energy. Fourthly, the intensive efforts to develop the nuclear technology in the next generation will give rise to a further evolution in science and technology in the future. A few examples of medium- and long-range goals of the nuclear energy research are development of new types of reactors which can meet various needs of energy more flexibly and reliably than the existing reactors, fundamental and ultimate solution of the radioactive waste problems, creation and development of new types of energy production systems which are to come beyond the fusion, new development in the biological risk assessment of the radiation effects and so on. In order to accomplish those goals it is quite important to introduce innovations in such underlying technologies as materials control in more microscopic manners, photon and particle beam techniques, accelerator engineering, artificial intelligence, and so on. 32 refs, 2 figs

  12. Nuclear energy: a reasonable choice?

    International Nuclear Information System (INIS)

    Nifenecker, H.

    2011-01-01

    While nuclear energy appears today as a powerful and carbon-free energy, it generates at the same time doubts and apprehension in the general public. Are these fears justified? Is France the most advanced country in the nuclear domain? Should we fear a Chernobyl-like accident in France? Is any irradiation dangerous? What would be the consequences of a terror attack against a reactor? Will nuclear energy be powerful enough to take up the energy reserves challenge? Will the waste management and the nuclear facilities dismantlement be extremely expensive in comparison with the electricity production costs? Do we know how to manage nuclear wastes on the long-term? This book tries to supply some relevant arguments in order to let the reader answering these questions himself and making his own opinion on this topic. (J.S.)

  13. Nuclear power: an essential energy

    International Nuclear Information System (INIS)

    Agnew, H.M.

    1980-01-01

    Dr. Agnew notes that the public fails to remember that the electric utilities and equipment manufacturers did not invent nuclear energy; they only choose whether or not to use it to generate power. The effort to regain world leadership in nuclear energy will require recognizing that the rest of the world needs it too. Opposition to the use of nuclear power has been politically effective, in spite of the need to move to a non-petroleum fuel base and without coming up with a viable alternative. The nuclear industry responded to the Three Mile Island accident by taking steps to improve reactor safety, but the industry continues to be threatened because of the suspended reprocessing and breeder programs. The industry must make a compelling case for energy independence to persuade the public that all energy sources, including nuclear, must be developed

  14. Informing parliamentarians on nuclear energy

    International Nuclear Information System (INIS)

    1995-01-01

    This publication contains a selection of the papers presented at an international seminar on informing parliamentarians in the nuclear field. This seminar has been organized by the OECD Nuclear Energy Agency to respond to important information needs. As a matter of fact, providing clear and accurate information to decision-makers is a key element that contributes to the quality of work for legislation for a safe use of nuclear energy. The sessions dealt with : meeting the information needs of parliamentarians and other elected representatives on nuclear energy questions, actors and their respective roles in the information process, means and tools for communicating information on nuclear energy, case studies in communication with elected officials. Abstracts have been prepared for all of the papers in this volume. (TEC)

  15. Nuclear Energy in Space Exploration

    Energy Technology Data Exchange (ETDEWEB)

    Seaborg, Glenn T.

    1968-01-01

    Nuclear space programs under development by the Atomic Energy Commission are reviewed including the Rover Program, systems for nuclear rocket propulsion and, the SNAP Program, systems for generating electric power in space. The letters S-N-A-P stands for Systems for Nuclear Auxiliary Power. Some of the projected uses of nuclear systems in space are briefly discussed including lunar orbit, lunar transportation from lunar orbit to lunar surface and base stations; planetary exploration, and longer space missions. The limitations of other sources of energy such as solar, fuel cells, and electric batteries are discussed. The excitement and visionary possibilities of the Age of Space are discussed.

  16. Nuclear energy, future of ecology?

    International Nuclear Information System (INIS)

    Comby, B.

    1995-01-01

    This work can surprise; because it is said that nuclear energy is the only one that will allow to satisfy the energy needs of the planet by reducing the pollution. It gives answers on: Chernobyl accident, the existence of natural radioactivity, the comparison between natural radioactivity and medical, military and industrial irradiation, the pollution of our environment, the petroleum whom reserves are going to decrease, the advantages of the 'clever' nuclear and the disadvantages of the 'dustbin' nuclear, why some of ecologists are favourable to the nuclear, the effects of radiations on health, the foods irradiation, the wastes processing and the future of our planet. (N.C.)

  17. Nuclear energy: the European way

    International Nuclear Information System (INIS)

    Anon.

    1993-01-01

    The dossier published in this issue deals with the present and future situation of nuclear energy in Europe. What could be the trends of the nuclear development in the Europe of tomorrows. That global question is answered by pointing out the different data related to the present state of european nuclear programmes. Such an overview is followed by a serie of articles dealing with definite items: the actions implemented by the European Communities Commission: the electricity market and EDF policy in the field of european electric grids; the trends of nuclear cycle industry and the perfecting of the future european nuclear reactor

  18. Magnetic effects in heavy-ion collisions at intermediate energies

    International Nuclear Information System (INIS)

    Ou Li; Li Baoan

    2011-01-01

    The time evolution and space distribution of internal electromagnetic fields in heavy-ion reactions at beam energies between 200 and 2000 MeV/nucleon are studied within an isospin-dependent Boltzmann-Uhling-Uhlenbeck transport model (ibuu11). While the magnetic field can reach about 7x10 16 G, which is significantly higher than the estimated surface magnetic field (∼1x10 15 G) of magnetars, it has almost no effect on nucleon observables because the Lorentz force is normally much weaker than the nuclear force. Very interestingly, however, the magnetic field generated by the projectilelike (targetlike) spectator has a strong focusing and defocusing effect on positive and negative pions at forward (backward) rapidities. Consequently, the differential π - /π + ratio as a function of rapidity is significantly altered by the magnetic field, whereas the total multiplicities of both positive and negative pions remain about the same. At beam energies above about 1 GeV/nucleon, while the integrated ratio of total π - to π + multiplicities is not, the differential π - /π + ratio is sensitive to the density dependence of nuclear symmetry energy E sym (ρ). Our findings suggest that magnetic effects should be carefully considered in future studies of using the differential π - /π + ratio as a probe of the E sym (ρ) at suprasaturation densities.

  19. Energy from nuclear reactors

    International Nuclear Information System (INIS)

    Hospe, J.

    1977-01-01

    This VDI-Nachrichten series has the target to provide a technical-objective basis for the discussion of the pros and cons of nuclear power. The first part deals with LWR-type reactors which so far have prevailed in nuclear power generation. (orig.) [de

  20. Energy Outlook and Nuclear Energy in China

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Mooneon; Kang, Jun-young; Song, Kiwon; Park, Hyun Sun; Park, Chang Kue [Pohang university of science and technology, Pohang (Korea, Republic of)

    2015-05-15

    China receives attention from the whole world as not only have they become a country spending the most energy in the world, but also the amount of energy they need is still increasing. Consequently, many problems related to environmental pollution have occurred in China. Recently, China agreed to reduce carbon emission in order to deal with this issue. Therefore, they need to find energy sources other than fossil fuel; the nuclear energy could be an alternative. In addition, it is considered to be a base load owing to its low fuel cost and continuation of electricity generation. In reality, the Chinese government is planning to build about 400 Nuclear Power Plants (NPPs) up to 2050. Therefore, it is expected that China will become a giant market in the nuclear industry. It could give us either chances to join the huge market or challenges to meet not merely nuclear fuel price crisis but competitors from China in the world nuclear power plant market. In any case, it is obvious that the energy policy of China would influence us significantly. Accordingly, we need appropriate prediction of the Chinese nuclear industry to cope with the challenges.

  1. 78 FR 76599 - Nuclear Energy Advisory Committee

    Science.gov (United States)

    2013-12-18

    ... DEPARTMENT OF ENERGY Nuclear Energy Advisory Committee AGENCY: Office of Nuclear Energy..., General Services Administration, notice is hereby given that the Nuclear Energy Advisory Committee (NEAC... to the Department of Energy's Office of Nuclear Energy on complex science and technical issues that...

  2. Nuclear energy and climate change

    International Nuclear Information System (INIS)

    Gonzalez Jimenez, A.

    2002-01-01

    Energy is one of the essential motives for social and economic development of the humanity. Nuclear energy is a feasible option to stand up to a larger demand of energy, and it is playing, and will continue playing in the future, a decisive role in the debate about climate change and sustainable development, and in the efforts to reduce the CO 2 emissions. (Author)

  3. Nuclear energy safety - new challenges

    Energy Technology Data Exchange (ETDEWEB)

    Rausch, Julio Cezar; Fonseca, Renato Alves da, E-mail: jrausch@cnen.gov.b, E-mail: rfonseca@cnen.gov.b [Comissao Nacional de Energia Nuclear (CNEN), Rio de Janeiro, RJ (Brazil)

    2011-07-01

    Fukushima accident in March this year, the second most serious nuclear accident in the world, put in evidence a discussion that in recent years with the advent of the 'nuclear renaissance' has been relegated in the background: what factors influence the use safe nuclear energy? Organizational precursor, latent errors, reduction in specific areas of competence and maintenance of nuclear programs is a scenario where the guarantee of a sustainable development of nuclear energy becomes a major challenge for society. A deep discussion of factors that influenced the major accidents despite the nuclear industry use of the so-called 'lessons learned' is needed. Major accidents continue to happen if a radical change is not implemented in the focus of safety culture. (author)

  4. Nuclear energy has a future

    International Nuclear Information System (INIS)

    Sorin, F.

    2012-01-01

    Nuclear energy appears to be a main asset to France in the context of the worldwide economic slump. Nuclear power provides a cheap electricity that spares the buying power of households and increases the competitiveness of French enterprises. Nuclear industry with major companies like EDF, AREVA and CEA and 450 small and medium-sized enterprises, represents a core resistant to industrial decline. Nuclear industry is a good provider of work and globally it represents 2% of all the jobs in France. Concerning the trade balance, nuclear power plays twice; first by exporting equipment and services for a value of 7 billions euros a year and secondly by sparing the cost of energy imports that would be necessary if nuclear power was not here which is estimated to 20 billions euros a year. (A.C.)

  5. Nuclear energy safety - new challenges

    International Nuclear Information System (INIS)

    Rausch, Julio Cezar; Fonseca, Renato Alves da

    2011-01-01

    Fukushima accident in March this year, the second most serious nuclear accident in the world, put in evidence a discussion that in recent years with the advent of the 'nuclear renaissance' has been relegated in the background: what factors influence the use safe nuclear energy? Organizational precursor, latent errors, reduction in specific areas of competence and maintenance of nuclear programs is a scenario where the guarantee of a sustainable development of nuclear energy becomes a major challenge for society. A deep discussion of factors that influenced the major accidents despite the nuclear industry use of the so-called 'lessons learned' is needed. Major accidents continue to happen if a radical change is not implemented in the focus of safety culture. (author)

  6. Nuclear energy safety - new challenges

    Energy Technology Data Exchange (ETDEWEB)

    Rausch, Julio Cezar; Fonseca, Renato Alves da, E-mail: jrausch@cnen.gov.b, E-mail: rfonseca@cnen.gov.b [Comissao Nacional de Energia Nuclear (CNEN), Rio de Janeiro, RJ (Brazil)

    2011-07-01

    Fukushima accident in March this year, the second most serious nuclear accident in the world, put in evidence a discussion that in recent years with the advent of the 'nuclear renaissance' has been relegated in the background: what factors influence the use safe nuclear energy? Organizational precursor, latent errors, reduction in specific areas of competence and maintenance of nuclear programs is a scenario where the guarantee of a sustainable development of nuclear energy becomes a major challenge for society. A deep discussion of factors that influenced the major accidents despite the nuclear industry use of the so-called 'lessons learned' is needed. Major accidents continue to happen if a radical change is not implemented in the focus of safety culture. (author)

  7. Nuclear energy - status and outlook

    Energy Technology Data Exchange (ETDEWEB)

    Rogner, Hans-Holger; MacDonald, Alan

    2007-07-01

    Rising expectations best characterize the current prospects of nuclear power in a world that is confronted with a burgeoning demand for energy, higher energy prices, energy supply security concerns and growing environmental pressures. It appears that the inherent economic and environmental benefits of the technology and its excellent performance record over the last twenty years are beginning to tilt the balance of political opinion and public acceptance in favour of nuclear power. Nuclear power is a cost-effective supply-side technology for mitigating climate change and can make a substantial contribution to climate protection. This paper reviews the current status of nuclear power and its fuel cycle and provides an outlook on where nuclear power may be headed in the short-to-medium run (20 to 40 years from now). (auth)

  8. Economic Analysis of Nuclear Energy

    International Nuclear Information System (INIS)

    Kim, S. S.; Lee, M. K.; Moon, K. H.; Nam, J. H.; Noh, B. C.; Kim, H. R.

    2008-12-01

    The concerns on the global warming issues in the international community are bringing about a paradigm shift in the national economy including energy technology development. In this connection, the green growth mainly utilizing green technology, which emits low carbon, is being initiated by many advanced countries including Korea. The objective of the study is to evaluate the contribution to the national economy from nuclear energy attributable to the characteristics of green technology, to which nuclear energy belongs. The study covers the role of nuclear in addressing climate change issues, the proper share of nuclear in the electricity sector, the cost analyses of decommissioning and radioactive waste management, and the analysis on the economic performance of nuclear R and D including cost benefit analysis

  9. Mass distributions in nucleon-induced fission at intermediate energies

    CERN Document Server

    Duijvestijn, M C; Hambsch, F J

    2001-01-01

    Temperature-dependent fission barriers and fission-fragment mass distributions are calculated in the framework of the multimodal random neck-rupture model (MM-RNRM). It is shown how the distinction between the different fission modes disappears at higher excitation energies, due to the melting of shell effects. The fission-fragment mass yield calculations are coupled to the nuclear reaction code ALICE-91, which takes into account the competition between the other reaction channels and fission. With the combination of the temperature-dependent MM-RNRM and ALICE-91 nucleon-induced fission is investigated at energies between 10 and 200 MeV for nuclei varying from Au to Am. (72 refs).

  10. Nuclear energy discussion in Switzerland

    International Nuclear Information System (INIS)

    Brupbacher, F.

    1989-01-01

    As regards the subject of nuclear power, Switzerland is no better off than Germany or the Benelux nations. In particular, Swiss people do not have superior insight or more general agreement in their views as to nuclear energy use. With reference to the whole nation, advocates and opponents of nuclear power currently are about equal in number; hence decisions are blocked the same as elsewhere. (orig.) [de

  11. Political aspects of nuclear energy

    International Nuclear Information System (INIS)

    Kiener, E.

    1989-01-01

    In Switzerland as in other countries public opinion on nuclear energy has drastically changed with time. Surveys show that a majority at present favours abandoning nuclear energy in Switzerland, but does not consider feasible an immediate switchover to other forms of energy. The behaviour is contradictory because increasingly more electric power is used, even after Chernobyl. The resistence has many facets. The debate is largely focused on the question of future technological and economic development. Nuclear energy also became the scapegoat for a development of the last few decades it has not been responsible for (destruction of the environment, waste of natural resources). For the sake of the environment and future economic development, the continued use of nuclear energy has to be ensured. This calls for great efforts in order to convince the people that nuclear power is an essential and logical part of our energy supply. In this process, the fear of a nuclear energy and the unease about industrial society must not be dismissed as irrelevant. (orig.)

  12. Nuclear energy demon

    International Nuclear Information System (INIS)

    Ruckdeschel, W.

    1980-01-01

    The German nuclear power plants (here Grafenrheinfeld, Isar) dispose of large-scale provisions echeloned in depth against release of activity due to incidents. According to human judgement environmental risks can be excluded. The direct risk is explained in the Rasmussen-study and in the German Risk Study Nuclear Power Plants. The Inhaber-study represents an important contribution to the risk assessment. (DG) [de

  13. Nuclear energy in metallurgy

    Energy Technology Data Exchange (ETDEWEB)

    Jirak, Z; Malik, J; Vrba, J

    1976-01-01

    The present power situation and its estimated development with a view to metallurgy is presented. The possibilities of the development of Czechoslovak metallurgy are described with regard to conventional fuels and to nuclear power applications. The programme of the use of nuclear power in countries with a highly developed metallurgical industry, such as Japan, the FRG, etc., is presented and the technical pre-requisites for the use of nuclear power in metallurgy, namely the use of high temperature reactors and their incorporation in nuclear metallurgical complexes are discussed. The problems are indicated of the selection of suitable materials for high temperature reactors and the experience is described with the operation of such equipment. The results are given of the analysis of 10 variants of the model of a nuclear metallurgical complex manufacturing 1000 tons of sponge iron per day and having four main technological circuits (the helium circuit, the steam circuit, the reduction gas circuit and the cycle of metallurgical processes). An estimate is given of the capital costs of building a high temperature reactor, a power plant and a metallurgical complex with the reactor. The costs are also given of steel and power production in a nuclear metallurgical complex.

  14. Systematics of intermediate-energy single-nucleon removal cross sections

    Science.gov (United States)

    Tostevin, J. A.; Gade, A.

    2014-11-01

    There is now a large and increasing body of experimental data and theoretical analyses for reactions that remove a single nucleon from an intermediate-energy beam of neutron- or proton-rich nuclei. In each such measurement, one obtains the inclusive cross section for the population of all bound final states of the mass A -1 reaction residue. These data, from different regions of the nuclear chart, and that involve weakly and strongly bound nucleons, are compared with theoretical expectations. These calculations include an approximate treatment of the reaction dynamics and shell-model descriptions of the projectile initial state, the bound final states of the residues, and the single-particle strengths computed from their overlap functions. The results are discussed in the light of recent data, more exclusive tests of the eikonal dynamical description, and calculations that take input from more microscopic nuclear structure models.

  15. Nuclear energy applications - ethical considerations

    International Nuclear Information System (INIS)

    Hoermann, K.

    1980-01-01

    Following an Austrian referendum in 1978 which showed a small majority against operation of nuclear power stations, the economic penalties involved by this decision are qualitatively discussed, with emphasis on reduced standards of living. Religious considerations are examined and the difficulty of obtaining informed public opinion is stressed. Alternative sources of energy, including nuclear fusion, are briefly referred to. (G.M.E.)

  16. Nuclear energy for environmental protection

    International Nuclear Information System (INIS)

    Souza, Jair Albo Marques de

    1992-01-01

    In 1990 nuclear energy supplied about 17% of the total electric power produced in the world, what makes it the third most used power source after coal and hydropower. In this paper the advantages of using nuclear power for generating large quantities of electric power are presented

  17. Nuclear energy: the way ahead

    International Nuclear Information System (INIS)

    Fells, I.

    1981-01-01

    The biggest task facing the nuclear power industry is one of educating public and politicians in such a way that a balanced critical approach to the risks and benefits of nuclear power replaces the uninformed emotional response. Only then, the author believes, can political decision-makers, reflecting public response, develop acceptable energy strategies. (author)

  18. Quality assurance of nuclear energy

    International Nuclear Information System (INIS)

    1994-12-01

    It consists of 14 chapters, which are outline of quality assurance of nuclear energy, standard of quality assurance, business quality assurance, design quality assurance, purchase quality assurance, production quality assurance, a test warranty operation warranty, maintenance warranty, manufacture of nuclear power fuel warranty, computer software warranty, research and development warranty and quality audit.

  19. Nuclear energy in the Eighties

    International Nuclear Information System (INIS)

    Franklin, N.L.

    1981-01-01

    The article gives a summarizing prognosis on possible developments in the utilization of nuclear energy during the next 10 years. The main concerns are the uranium supply, nuclear reactor industry, the breeding reactor, the fuel cycle, and the public opinion. (UA) [de

  20. Attitude to nuclear energy problems

    International Nuclear Information System (INIS)

    Danzmann, H.J.

    1975-01-01

    Two methods are dealt with which show the dialectic shrewdness of some of the active nuclear energy opponents in their attempt to influence opinions. By means of examples of quotations from lectures of recognized scientists (v. Weizsaecker, Teller, Heisenberg, Winnacker) which are torn out of their context, the public are deliberately misled by a few demagogic nuclear power critics. (HP/LH) [de

  1. Benefits of using nuclear energy

    International Nuclear Information System (INIS)

    Lira, Elda Vilaca

    2015-01-01

    The purpose of this work is to present, especially for high school students, the benefits of the use of nuclear energy, promoting a deeper knowledge of this technology, encouraging critical thinking of students and society around them

  2. Nuclear energy and the public

    International Nuclear Information System (INIS)

    Anon.

    1985-01-01

    Over two thirds of the population (68%) believe that nuclear energy is necessary to secure the supply of power. This is one of the results of a representative poll conducted by the Demoscopic Institute Allensbach on behalf of the Nuclear Energy Information Circle of the German Atom Forum. 78% of the population are of the opinion that the power supply is secure for the next 20 years. The significance of nuclear power in today's power supply is, however, grossly underestimated. For example 30% of respondents put the number of nuclear power plants in the Federal Republic at four at the most. Many more people than one year ago are now convinced of the environmental compatibility of nuclear power plants. The public debate on nuclear energy is generally judged critically by politicians, journalists and experts: factual and emotional. 54% of the population and 71% of politicians interviewed regard the question of nuclear energy utilisation as a predominantly political decision. Questioned was a representative sample of the population which included politicians, journalists, scientists and energy economists. The results, which were presented at a press conference in Bonn by the economist Renate Koecher, are reviewed. (orig.) [de

  3. The energy yield of nuclear energy

    International Nuclear Information System (INIS)

    Smith, Ph.B.

    1983-01-01

    In this paper, a comparison is made between the energy produced in a nuclear cycle in a light-water reactor without recycling of plutonium or uranium on the one hand and the energy stored into the system to realize this energy production on the other. Only empirical data are used, which means that some energy costs are omitted because no empirical data were available (e.g. energy needed to waste processing and waste disposal). The following steps are taken into account: production and processing of ores, conversion and enrichment of fuels, construction and shutdown of the reactor itself. (Auth.)

  4. Nuclear energy: obstacles and promises

    International Nuclear Information System (INIS)

    Bacher, P.

    2003-01-01

    Nuclear energy has distinctive merits (sustainable resources, low costs, no greenhouse gases) but its development must overcome serious hurdles (fear of accidents, radio-phobia, waste management). The large unit size of present-day reactors is compatible only with large electrical grids, and involves a high capital cost. Taking into account these different factors, the paper outlines how nuclear energy may contribute to the reduction of greenhouse gases, and which are the most promising developments. (author)

  5. Religious organizations debate nuclear energy

    International Nuclear Information System (INIS)

    Dowell, T.

    1984-08-01

    This paper reviews the history of the religious debate on nuclear energy over the last thirty years. In the 1950s, religious statements recognized the peaceful uses of atomic energy as a blessing from God and called upon world leaders to promote its use. Nuclear energy programmes were launched in this decade. In the 1960s, there was still religious approval of nuclear energy, but questions about ethics arose. It was not until the 1970s, after the oil crisis, that serious questioning and criticism of nuclear energy emerged. This was particularly true in the United States, where the majority of statements originated - especially in 1979, the year of the Three Mile Island accident. Around this time, the World Council of Churches developed the concept of the just, participatory and sustainable society. The meaning and use of these terms in the nuclear energy debate is examined. This paper also compares the balanced debate of the World Council with the case against the plutonium economy prepared by the National Council of the Churches of Christ in the USA. Three religious statements from the 1980s are examined. A United Church of Canada resolution, critical of nuclear energy, is compared with a favourable report from the Methodist Church in England. Both use similar values: in one case, justice, participation and sustainability; in the other case, concern for others, participation and stewardship. There are not many Catholic statements on nuclear energy. One which is cautious and favourable is examined in detail. It is concluded that the use of concepts of justice, participation and sustainability (or their equivalents) has not clarified the nuclear debate

  6. Proceedings of the workshop on program options in intermediate-energy physics. Volume 1. Summary and panel reports

    Energy Technology Data Exchange (ETDEWEB)

    Allred, J.C.; Talley, B. (comps.)

    1980-05-01

    A Workshop on Program Options in Intermediate-Energy Physics sponsored by the US Department of Energy was held at Los Alamos Scientific Laboratory, August 20 to 31, 1979. The scope of the workshop included all laboratories in intermediate-energy physics, worldwide, and all of these sent representatives to the workshop. The workshop addressed itself to the critical questions on nuclear and particle physics and how they can best be investigated by intermediate-energy accelerators. Among the questions that the workshop members considered were: (1) what are the important physics topics which might be understood through research on these accelerators in the next 10 years. These topics include, but are not restricted to, fundamental interactions and symmetries in particle physics, and nuclear modes of motion, structure, and reaction mechanisms; (2) what experiments should be undertaken to carry out the program. What are the kinematical conditions, accuracies, resolutions, and other parameters required to obtain the desired knowledge; (3) which accelerators are best suited for each experiment. What work at other laboratories (low-, intermediate-, or high-energy) could be undertaken to complement and/or supplement the proposed LAMPF program; and (4) what new facility capabilities should be explored for the long-term future. The workshop was divided into small panels in order to promote effective interchange of ideas. After reports to other panels and plenary sessions, the panelists prepared reports stating the results of their deliberations. These reports comprise the principal part of Volume I.

  7. Proceedings of the workshop on program options in intermediate-energy physics. Volume 1. Summary and panel reports

    International Nuclear Information System (INIS)

    Allred, J.C.; Talley, B.

    1980-05-01

    A Workshop on Program Options in Intermediate-Energy Physics sponsored by the US Department of Energy was held at Los Alamos Scientific Laboratory, August 20 to 31, 1979. The scope of the workshop included all laboratories in intermediate-energy physics, worldwide, and all of these sent representatives to the workshop. The workshop addressed itself to the critical questions on nuclear and particle physics and how they can best be investigated by intermediate-energy accelerators. Among the questions that the workshop members considered were: (1) what are the important physics topics which might be understood through research on these accelerators in the next 10 years. These topics include, but are not restricted to, fundamental interactions and symmetries in particle physics, and nuclear modes of motion, structure, and reaction mechanisms; (2) what experiments should be undertaken to carry out the program. What are the kinematical conditions, accuracies, resolutions, and other parameters required to obtain the desired knowledge; (3) which accelerators are best suited for each experiment. What work at other laboratories (low-, intermediate-, or high-energy) could be undertaken to complement and/or supplement the proposed LAMPF program; and (4) what new facility capabilities should be explored for the long-term future. The workshop was divided into small panels in order to promote effective interchange of ideas. After reports to other panels and plenary sessions, the panelists prepared reports stating the results of their deliberations. These reports comprise the principal part of Volume I

  8. Department of Energy Nuclear Energy Standards Program

    International Nuclear Information System (INIS)

    Silver, E.G.

    1980-01-01

    The policy with respect to the development and use of standards in the Department of Energy (DOE) programs concerned with maintaining and developing the nuclear option for the civilian sector (both in the form of the currently used light water reactors and for advanced concepts including the Liquid Metal Fast Breeder Reactor), is embodied in a Nuclear Standards Policy, issued in 1978, whose perspectives and philosophy are discussed

  9. Sustainable development and nuclear energy

    International Nuclear Information System (INIS)

    2000-05-01

    This report has four chapters .In the first chapter world energy statute and future plans;in the second chapter Turkey's energy statute and future plans; in the third chapter world energy outlook and in the last chapter sustainable development and nuclear energy has discussed in respect of environmental effects, harmony between generations, harmony in demand, harmony in sociapolitic and in geopolitic. Additional multimedia CD-ROM has included

  10. Nuclear energy in Germany

    International Nuclear Information System (INIS)

    1999-01-01

    Since September 1998 the Federal Government formed by a Red/Green Coalition declared its goal: irreversible phase out of nuclear power plants. The first attempt to stop reprocessing as well as the first attempt to change nuclear law failed. The present situation is as follows: existing nuclear power plants operate in a most satisfying way producing 170 TWh/a. i.e. 35% of total production; transport license is not granted; no new NPP is planned, but Germany will participate in the French European Power Reactor (EPR) project. Concerning fast reactors, no industrial activities exist in Germany. There is no intention to build a facility, but Germany participates in the European CAPRA project. Existing research items are related to neutronics, safety analysis, irradiation experiment TRABANT, accelerator driven systems, thermohydraulics, safety

  11. Nuclear energy of hope and dream

    International Nuclear Information System (INIS)

    2009-02-01

    This book describes nuclear energy as hopeful and helpful energy for our life. It includes a lot of introductions of carbon energy, green energy, an atomic reactor for generation of electricity and research, a nuclear fuel cycle, radiation in life, radiation measurement, a radioisotope, the principle of utilization of radiation, utilization for clinical medicine, nuclear energy and economy, international cooperation of nuclear energy and control of nuclear energy.

  12. Protons scattering on Li isotopes at intermediate energies

    International Nuclear Information System (INIS)

    Zhusupov, M.A.; Imambekov, O.; Sanfirova, A.V.; Ibraeva, E.T.

    2003-01-01

    The protons scattering differential cross section on the 6,7,8 Li nuclei are calculated within the framework the Glauber-Sitenko multiple scattering theory at intermediate energies (from 100 to 1000 MeV). In the calculations the multi-cluster wave functions (αt for 7 Li, αnp for 6 Li, and αtn for 8 Li) considering within potential cluster model have been used. Differential cross sections for 6 Li, 7 Li, 8 Li and 9 Li nuclei are similar: absolute cross sections are almost the same, diffraction minimum for large A shifting to the field of the least scattering angles that reflecting increase of the material radius. For the 11 Li the differential cross section absolute value is smaller about in two time than for the rest isotopes. At present it is reliably established, that the 11 Li nucleus has an exotic structure - the nine-nucleon core ( 9 Li) around which the two-neutron halo is rotating. The principal characteristics of the Li nuclei are presented in tabular form

  13. Nucleon charge-exchange reactions at intermediate energy

    Energy Technology Data Exchange (ETDEWEB)

    Alford, W.P. [Western Ontario Univ., London, ON (Canada). Dept. of Physics]|[TRIUMF, Vancouver, BC (Canada); Spicer, B.M. [Melbourne Univ., Parkville, VIC (Australia). School of Physics

    1997-12-31

    An historical review of the development of ideas pertaining to Gamow-Teller giant resonances is given, and a description of the emergence of techniques for the study of charge exchange reactions - particularly the technical advances which yielded the recent volume of new date. The present status of charge exchange reactions is reviewed and assessed. Evidence is presented from the {sup 14}C(p,n) reaction for the dominance of the spin-isospin component of the nucleon-nucleon interaction in intermediate energy reactions. In (p,n) reactions the Gamow-Teller giant resonance dominates the spectra, with higher multipoles contributing. By contrast, in (n,p) reactions in the heavier nuclei, the Gamow-Teller transitions are substantially Pauli-blocked and the spin dipole resonance dominates, with contributions from higher multipoles. Discussions of the multipole decomposition process, used to obtain from the data the contributions of the different multipoles, and the contributions of the multipoles, are given. 226 refs., 19 figs.

  14. 77 FR 67809 - Nuclear Energy Advisory Committee

    Science.gov (United States)

    2012-11-14

    ... DEPARTMENT OF ENERGY Nuclear Energy Advisory Committee AGENCY: Department of Energy, Office of Nuclear Energy. ACTION: Notice of Open Meeting. SUMMARY: This notice announces a meeting of the Nuclear...., Washington, DC 20585; telephone (301) 903-9096; email: [email protected]nuclear.energy.gov . SUPPLEMENTARY...

  15. 78 FR 29125 - Nuclear Energy Advisory Committee

    Science.gov (United States)

    2013-05-17

    ... DEPARTMENT OF ENERGY Nuclear Energy Advisory Committee AGENCY: Office of Nuclear Energy, Department of Energy. ACTION: Notice of open meeting. SUMMARY: This notice announces a meeting of the Nuclear... Independence Avenue SW., Washington DC 20585; telephone (301) 903-9096; email [email protected]nuclear.energy.gov...

  16. Nuclear energy: a master card

    International Nuclear Information System (INIS)

    Garaud, M.F.

    1996-01-01

    Here are exposed the elements of the French doctrine of nuclear deterrence. The historical points, from the American deterrence to the actual situation are detailed. The political aspects, with the non proliferation, the ecologists pressure and the anti nuclear pacifism are evoked to precise the uncertainty of the actual French deterrence. 9 analysis are on the deterrence subject, then the civil aspect of nuclear energy is discussed, with the advantages and the disadvantages of the nuclear power plants and the reprocessing in two analysis; a special mention is noted for the reactor safety in Eastern Europe, in the last article. (N.C.)

  17. Britain's nuclear energy policy

    International Nuclear Information System (INIS)

    Duncan, Colin D.

    2000-01-01

    Full text: In the mid 1980s the Labour Party's position and clear intention was to phase out nuclear generated power in the UK. BNFL's reprocessing business was singled out for particular criticism. Many argued that this sounded the death knell for an industry with a legacy of negative public opinion and no commercial future. How against this background then was the Rt. Hon Tony Blair able, on 9 June 1999, to state that 'If we were to question the continued operation of Thorp, I think that would not be right. Thorp is an operation with orders now valued at some 12 billion pounds, it provides 6000 skilled jobs, it indirectly supports many more... I do not support the case of those who would like us to abandon Thorp?' Furthermore, in June 1999 the Royal Society stated that, 'it is vital to keep the nuclear option open' and in October of the same year the House of Commons Trade Industry Select Committee went further and advised, 'a formal presumption be made now for the purposes of long-term planning that new nuclear plant may be required in the course of the next two decades'. On 13 July 1999, the Secretary of State for Trade and Industry, Rt. Hon Stephen Byers, announced a possible sale of up to 49% of BNFL by a Public Private Partnership. Dare we view this as the genesis of a nuclear renaissance for the United Kingdom? This clear change in political attitude towards the nuclear option has come about as a result of a concerted public and government relations effort over the past ten years. That said, many barriers remain if we are to meet the challenge of delivering new nuclear build in the UK. Public opinion may allow new build but only if the industry demonstrates a track record of safety and environmental stewardship. There will always be the 'not in my back yard' argument so we must be a good neighbour and, most importantly of all, a long-term solution must be found for the disposal of nuclear waste. If the stage is set for the nuclear renaissance, the industry

  18. Argentine nuclear energy standardization activities

    International Nuclear Information System (INIS)

    Boero, Norma; Corcuera, Roberto; Palacios, Tulio A.; Hey, Alfredo M.; Berte, G.; Trama, L.

    2004-01-01

    The International Organization for Standardization (ISO) has more than 200 Technical Committees that develop technical standards. During April 2004 took place in Buenos Aires the 14th Plenary of the ISO/TC 85 Nuclear Energy Committee. During this Plenary issues as Nuclear Terminology, Radiation Protection, Nuclear Fuels, Nuclear Reactors and Irradiation Dosimetry was dealt with. 105 International delegates and 45 National delegates (belonging to CNEA, ARN, NASA, INVAP, CONUAR, IONICS and other organizations) attended the meetings. During this meeting ISO/TC 85 changed its scope; the new scope of the Committee is 'Standardization in the fields of peaceful applications of nuclear energy and of the protection of individuals against all sources of ionizing radiations'. This work summarizes the most important advances and resolutions about the development of standards taken during this meeting as well as the main conclusions. (author) [es

  19. Economic Analysis of Nuclear Energy

    International Nuclear Information System (INIS)

    Lee, Han Myung; Lee, M. K.; Moon, K. H.; Kim, S. S.; Lim, C. Y.; Song, K. D.; Oh, K. B.

    2002-12-01

    This study deals with current energy issues, environmental aspects of energy, project feasibility evaluation, and activities of international organizations. Current energy issues including activities related with UNFCCC, sustainable development, and global concern on energy issues were surveyed with focusing on nuclear related activities. Environmental aspects of energy includes various topics such as, inter- industrial analysis of nuclear sector, the role of nuclear power in mitigating GHG emission, carbon capture and sequestration technology, hydrogen production by using nuclear energy, Life Cycle Analysis as a method of evaluating environmental impacts of a technology, and spent fuel management in the case of introducing fast reactor and/or accelerator driven system. Project feasibility evaluation includes nuclear desalination using SMART reactor, and introduction of COMFAR computer model, developed by UNIDO to carry out feasibility analysis in terms of business attitude. Activities of international organizations includes energy planning activities of IAEA and OECD/NEA, introduction of the activities of FNCA, one of the cooperation mechanism among Asian countries. In addition, MESSAGE computer model was also introduced. The model is being developed by IAEA to effectively handle liberalization of electricity market combined with environmental constraints

  20. Public attitudes to nuclear energy

    Energy Technology Data Exchange (ETDEWEB)

    van der Pligt, J; Eiser, J R; Spears, R

    1984-09-01

    The last decade has seen a marked increase in public concern about nuclear energy. As a consequence, it is now recognized that the future of nuclear energy will not only depend on technical and economic factors, but that public acceptability of this technology will play a crucial role in its long-term future. This paper summarizes trends in public reactions to nuclear power in various countries and discusses a number of studies on public beliefs and attitudes to nuclear power in general, and to the building of a nuclear power plant near to one's home. It is concluded that the qualitative aspects of the possible risks of nuclear energy play an important role in the public's perception of this technology. It is also clear, however, that differences in perception of the risks do not embrace all the relevant aspects of the public's assessment of nuclear energy. Public reaction is also related to more-general beliefs and values, such as emphasis on economic versus social priorities, attitudes to technology and environmental concern. 11 references.

  1. Mechanisms of photon scattering on nucleons at intermediate energies

    International Nuclear Information System (INIS)

    L'vov, A.I.

    1992-01-01

    The principal question for studies of photon scattering by nucleons and nuclei is the following: Can photon scattering say something new about the structure of these objects in comparisons with photo- and electroproduction investigations? There is a general reason to believe that it is indeed the case. The Hamiltonian of the electromagnetic interaction has, in general, a piece quadratic in the electromagnetic field (the so-called two-photon seagull) which is seen only in two-photon processes, such as Compton scattering. Although the longitudnal part of this seagull is constrained by the gauge invariance, its transverse part is decoupled from the electromagnetic current and cannot be found in photoabsorption processes. The seagull S μν depends on explicit degrees of freedom included into the Hamiltonian. E.g. the non-relativisitic Schroedinger equation has an effective seagull due to the kinetic energy (p - eA) 2 /2M. Its parent relativistic Dirac equation has no seagull at all but has the same low-energy consequences due to additional degrees of freedom (antiparticles). In low-energy nuclear physics, with explicit meson exchanges and meson clouds (i.e. internal polarizability of the nucleons). By explicitly including the mesons into the Hamiltonian one can remove part of the seagulls. Then the rest of them will be a signal for degrees of freedom invisible in photoabsorption at energies of the considered scale. Some seagulls are related with t-channel exchanges in Compton scattering. The π o -exchange is seen in γp-scattering but has no counterpart in photoproduction off the proton. Thus, a complementary study of one- and two-photon reactions provides a way to look in a region of higher energies where direct studies via photoproduction processes may be hard

  2. The nuclear energy

    International Nuclear Information System (INIS)

    Leconte, Ph

    2001-08-01

    This paper is the lesson provided by the author at the physics summer school. After a recall on the atoms nuclei properties, he explains the nuclear reactor principle, their stability and safety. The fuel cycle is also detailed as the different reactors technologies. The last part deals with the thermonuclear fusion. (A.L.B.)

  3. High energy nuclear collisions

    Indian Academy of Sciences (India)

    We review some basic concepts of relativistic heavy-ion physics and discuss our understanding of some key results from the experimental program at the relativistic heavy-ion collider (RHIC). We focus in particular on the early time dynamics of nuclear collisions, some result from lattice QCD, hard probes and photons.

  4. Nuclear energy related research

    International Nuclear Information System (INIS)

    Salminen, Pertti

    1987-02-01

    This annual Research Programme Plan covers the nuclear related research planned to be carried out at the Technical Research Centre of Finland (VTT) in 1987 and funded by the Ministry of Trade and Industry in Finland, the Nordic Council of Ministers and VTT itself

  5. Industrial Applications of Nuclear Energy

    International Nuclear Information System (INIS)

    2017-01-01

    This publication provides a detailed overview of the potential use of nuclear energy for industrial systems and/or processes which have a strong demand for process heat/steam and power, and on the mapping of nuclear power reactors proposed for various industrial applications. It describes the technical concepts for combined nuclear-industrial complexes that are being pursued in various Member States, and presents the concepts that were developed in the past to be applied in connection with some major industries. It also provides an analysis of the energy demand in various industries and outlines the potential that nuclear energy may have in major industrial applications such as process steam for oil recovery and refineries, hydrogen generation, and steel and aluminium production. The audience for this publication includes academia, industry, and government agencies.

  6. Nuclear power: tomorrow's energy source

    International Nuclear Information System (INIS)

    2002-01-01

    In France, 76% of electricity is produced by nuclear power. The industry's pricing levels are among the most competitive in Europe. Thanks to its 58 nuclear reactors France enjoys almost 50% energy autonomy thus ensuring a highly stable supply. Equally, as a non-producer of greenhouse gases, the nuclear sector can rightfully claim to have an environmentally friendly impact. Against a background to increasing global demand with predictions that fossil fuels will run out and global warming a central issue, it is important to use production methods which face up to problems of this nature. There is no question that nuclear energy has a vital role to play alongside other energy sources. (authors)

  7. Nuclear energy: A female technology

    International Nuclear Information System (INIS)

    Tennenbaum, J.

    1994-01-01

    Amongst the important scientific and technological revolutions of history there is none in which women have played such a substantial and many-sided role as in the development of nuclear energy. The birth of nuclear energy is not only due to Marie Curie and Lise Meitner but also to a large number of courageous 'nuclear women' who decided against all sorts of prejudices and resistances in favour of a life in research. Therefore the revolution of the atom has also become the greatest breakthrough of women in natural sciences. This double revolution is the subject of this book. Here the history of nuclear energy itself is dealt with documented with the original work and personal memories of different persons - mainly women - who have been substantially involved in this development. (orig./HP) [de

  8. High education and nuclear energy

    International Nuclear Information System (INIS)

    Ghitescu, Petre; Prisecaru, Ilie; Stefanescu, Petre

    1998-01-01

    The Faculty of Energy of the University 'Politecnica' in Bucharest is the only faculty in Romania in the field of nuclear energy education. With an experience of more than 29 years, the Faculty of Energy offers the major 'Nuclear Power Plants', which students graduate after a 5-year education as engineers in the Nuclear Power Plant major. Among the principal objectives of the development and reshape of the Romanian education system was mentioned the upgrading of organizational forms by introducing the transfer credit system, and starting in the fall '97 by accrediting Radioprotection and Nuclear Safety Master education. As a result of co-operation and assistance offered by TEMPUS-SENECA program, the new major is shaped and endowed with a modern curriculum harmonized with UE and IAEA requirements and a modern and performing laboratory. This way the Romanian higher education offers a fully correct and concordant structure with UE countries education. (authors)

  9. Nuclear energy, environmental protection and international conflicts

    International Nuclear Information System (INIS)

    Menke-Glueckert, P.

    1975-01-01

    Some general and some critical remarks on: nuclear energy as an image for politics; nuclear energy as a model for research planning; nuclear controversy; the principle of precaution in nuclear and radiation protection law; reactor safety on probation; advantages and economy of nuclear energy; communication difficulties; the special role of nuclear energy; the need for European site planning; supervision of fissionable materials; the world's energy household in danger; global structure politics and nuclear energy; nuclear energy with a capacity for social innovations. (HP/LN) [de

  10. World supply of nuclear energy

    International Nuclear Information System (INIS)

    Pecqueur, Michel.

    1981-01-01

    At the end of 1980 nuclear energy accounted for 9% of the world production of electricity stemming from 262 power stations, utilising mainly the process of water reactors and representing an installed capacity of 142 GWe. This production, apparently limited, already represents the equivalent of 150 million TOE. The 600 nuclear power stations in service, under construction or ordered represent a total of 450 GWe. In 1985, their production ought to cover 15% of the world requirements of electricity, which corresponds to a doubling of the share of nuclear energy within 6 years. During these recent years, the development of nuclear energy has undergone a significant slowing down and the number of orders for new nuclear power stations has dropped considerably in particular in the United States. Considering the time required and the available industrial capacity, the accumulated capacity which could be installed worlwide by 1990 could attain 530 GWe, equivalent to 650 MTOE covering 24% of the world production of electricity and 7% of the world consumption of primary energy. A determined effort for the end of this century could end up by the installation of 1200 GWe of capacity, generating 1.5 GTOE. The share of nuclear energy would then represent 35% of the production of electricity [fr

  11. Concrete conditioners for low-intermediate level nuclear wastes

    International Nuclear Information System (INIS)

    Roehl, J.L.; Lorentz, R.G.; Franzen, H.R.

    1986-01-01

    The conditioning of low-intermediate level radioactive waste disposal, in Brazil, with concrete packages designed in such way that, in spite of being destined to receive compacted materials in long term sub-surface disposal, they may also be able to attend other storage or disposal necessities, is analysed. A design of a reinforced concrete package with a net volume of 360 l and, with compatible diameter to contain compacted 200 l drums, was developed. A study on compactation of 200 l steel packages is done. A pressure of 30.000 KN for compacting these 200 l drums was adapted, and two series of tests to verify the pressure volume reduction ratio and, the final dimensions and density of the compacted elements, was executed. (Author) [pt

  12. Fears caused by nuclear energy

    International Nuclear Information System (INIS)

    2011-01-01

    As after the Fukushima accident, fears with respect to nuclear energy may appear again, this very positive document outlines the differences between a nuclear bomb and a nuclear reactor, outlines the natural character of radioactivity and its benefits when used with low dose, outlines the fact that radioactivity although invisible can be easily and well measured. It comments the accident and recalls that TEPCO did not take the fact that ten meter high waves could happen as in Indonesia in 2004. It discusses the loss of confidence in scientists, in nuclear authorities. It addresses the issue of nuclear wastes, evokes the discovery of a natural underground nuclear reactor in Gabon, outlines properties of waste vitrification, discusses the case of high level wastes, of minor actinides, and of storage reversibility. It outlines the safety of installations containing plutonium, of plutonium transportation

  13. Nuclear power as a regional energy supply

    International Nuclear Information System (INIS)

    MacLoon, Frank.

    1983-02-01

    The author describes the Point Lepreau nuclear power plant and its impact on the electric power grid and the economy of the small province of New Brunswick. The 600 MW CANDU reactor is considered suitable for small operations and has an excellent world record. Although nuclear energy has high capital costs, its fuel costs are low, thus rendering it comparatively inflation free. Its fuel costs of 3 to 4 mills are contrasted with 40 mills for oil-fuelled units. The cost advantage of uranium over coal and oil permits New Brunswick to put aside funds for waste management and decommissioning. Regulatory streamlining is needed to reduce both expense and time of construction. The CANDU system is ideally suited to providing base load, with coal as an intermediate load supply and hydro for peaking. There is room for tidal power as a future part of the mix

  14. Intermediate energy heavy ions: An emerging multi-disciplinary research tool

    International Nuclear Information System (INIS)

    Alonso, J.R.

    1988-10-01

    In the ten years that beams of intermediate energy (∼50 MeV/amu≤E≤∼2 GeV/amu) heavy ions (Z≤92) have been available, an increasing number of new research areas have been opened up. Pioneering work at the Bevalac at the Lawrence Berkeley Laboratory, still the world's only source of the heaviest beams in this energy range, has led to the establishment of active programs in nuclear physics, atomic physics, cosmic ray physics, as well as biology and medicine, and industrial applications. The great promise for growth of these research areas has led to serious planning for new facilities capable of delivering such beams; several such facilities are now in construction around the world. 20 refs., 5 figs., 1 tab

  15. Evolution of collectivity in the 78Ni region: Coulomb excitation of 74Ni at intermediate energies.

    Directory of Open Access Journals (Sweden)

    Marchi T.

    2014-03-01

    Full Text Available The study of the collective properties of nuclear excitations far from stability provides information about the shell structure at extreme conditions. Spectroscopic observables such as the energy or the transition probabilities of the lowest states, in nuclei with large neutron excess, allow to probe the density and isospin dependence of the effective interaction. Indeed, it was recently shown that tensor and three-body forces play an important role in breaking and creating magic numbers. Emblematic is the case of the evolution of the Ni isotopic chain where several features showed up moving from the most neutron rich stable isotope (64Ni towards the 78Ni nucleus where the large neutron excess coincides with a double shell closure. In this framework, we have recently performed an experiment with the goal to extract the B(E2; 0+ → 2+ value for the 74Ni nucleus in an intermediate-energy Coulomb excitation experiment: preliminary results are discussed.

  16. Deuteron breakup mechanism in the intermediate-energy region

    International Nuclear Information System (INIS)

    Divadeenam, M.; Ward, T.E.

    1991-01-01

    In an earlier investigation, we have explored the possibility of explaining the deuteron breakup mechanism in terms of the Udagawa and Tannura (UT) formalism of the breakup-fusion process. The experimental doubly differential data were very well reproduced for the test case studies. However, the application of UT formalism of the spirit of DWBA involves the use of optical-model parameters for different nuclei and at different energies. The optical model parameters are not always unique. In the present study we investigate the deuteron breakup mechanism in terms of the semiclassical models of Serber (for the nuclear interaction part) and Dancoff (for the electromagnetic dissociation). In the case of Serber model the modification due to the finite range of the deuteron and the Glauber correction for the diffractive disassociation are considered. The modified deuteron breakup cross section either for the (d,p) or the (d,n) process is proportional to the product of the target radius and the deuteron radius (R target · R deuteron ). The predicted proton/neutron spectrum is centered around 1/2 E d and forward peaked. The Coulomb dissociation of deuteron is attributed to the deuteron dipole excitation in the presence of the nuclear Coulomb field. The neutron/proton spectrum, resulting from the Coulomb breakup of the deuteron, is highly forward peaked and also centered around 1/2 E d . The systematics of the deuteron breakup neutron/proton spectra are investigated for medium to heavy target nuclei at 50--200 MeV deuteron energies. 10 refs., 4 figs

  17. Intermediate range atmospheric transport and technology assessments: nuclear pollutants

    International Nuclear Information System (INIS)

    Rohwer, P.S.; Hoffman, F.O.; Miller, C.W.

    1981-01-01

    Mathematical models have been used to assess potential impacts of radioactivity releases during all phases of our country's development of nuclear power. Experience to date has shown that in terms of potential dose to man, the most significant releases of radioactivity from nuclear fuel cycle facilities are those to the atmosphere. Our ability to predict atmospheric dispersion will, therefore, ultimately affect our capability to understand and assess the significance of both routine and accidental discharges of radionuclides. Assessment of potential radiological exposures from postulated routine and accidental releases of radionuclides from the fast-breeder reactor will require the use of atmospheric dispersion models, and the design, siting, and licensing of breeder reactor fuel cycle facilities will be influenced by the predictions made by these models

  18. Nuclear Energy. Instructional Materials.

    Science.gov (United States)

    Jordan, Kenneth; Thessing, Dan

    This document is one of five learning packets on alternative energy (see note) developed as part of a descriptive curriculum research project in Arkansas. The overall objectives of the learning packets are to improve the level of instruction in the alternative energies by vocational exploration teachers, and to facilitate the integration of new…

  19. Click - nuclear energy

    International Nuclear Information System (INIS)

    1986-01-01

    The activities of British Nuclear Fuels are listed, explained and illustrated. It offers a complete cycle from uranium enrichment, fuel manufacture and transport, to fuel reprocessing and radioactive waste management. The uranium fission process is explained as are the basic principles of Magnox and Advanced Gas Cooled Reactors. BNFL's head office is at Risley in Cheshire and it has sites at Capenhurst (uranium enrichment plant), Springfields (fuel manufacturing plant) and Sellafield (fuel reprocessing plant). It owns Calder Hall and Chapelcross nuclear power stations. Safety is a major consideration and strict safety regulations are observed at all sites. BNFL also encourages public interest in its activities. This booklet is part of its public information effort. (U.K.)

  20. Nuclear energy from thorium

    International Nuclear Information System (INIS)

    Coote, G.E.

    1977-06-01

    Relevant topics in nuclear and reactor physics are outlined. These include: the thorium decay series; generation of fissile from fertile nuclides, in particular U-233 from Th-232; the princiiples underlying thermal breeder reactors; the production of U-232 in thorium fuel and its important influence on nuclear safeguards and the recycling of U-233. Development work is continuing on several types of reactor which could utilise thorium; each of these is briefly described and its possible role is assessed. Other tipics covered include safety aspects of thorium oxide fuel, reprocessing, fabrication of recycle fuel and the possibility of denaturing U-233 by adding natural uranium. It is concluded that previoue arguments for development of the thorium cycle are still valid but those relating to non-proliferation of weapons may become even more compelling. (auth.)

  1. The Future of Nuclear Energy

    International Nuclear Information System (INIS)

    Alonso, A.

    2005-01-01

    Current nuclear energy represents 23.5% of the total electrical power available within the OECD countries. This is the energy offering the lowest costs to generate, it does not emit greenhouse-effect fumes nor does it contribute to global warming, however, it does generate radioactive and toxic waste which society perceives as an unacceptable risk. For this reason the development of new nuclear installation in Europe is at a stand still or moving backward. Truthful information and social participation in decisions is the best way to achieve the eradication of the social phobia produced by this energy source. (Author)

  2. Nuclear energy in the Philippines

    International Nuclear Information System (INIS)

    1977-03-01

    This bibliography was prepared by the Scientific Library, Nuclear Training Department of the Philippine Atomic Energy Commission for scientists and researchers interested in nuclear energy in the Philippines. This sixth supplement consists of eighty-six (86) entries, mostly research reports of the scientists of the Philippine Atomic Energy Commission. The entries are arranged alphabetically by titles under their respective subject headings together with their bibliographic data consisting of author, title of publication, volume, data and pages. A brief annotation or a summary of the article follows. An author index is provided to facilitate prompt retrieval of the particular research information

  3. Nuclear energy or 'black out'

    International Nuclear Information System (INIS)

    Lederhilger, F.

    1980-01-01

    The interdependence of various energy sources, including pumped storage hydro-power and imported and exported electrical energy is emphasised and the effects of the loss of 700 MW from the mothballed Zwentendorf nuclear power station are discussed. These effects are stated as increased costs of energy, as well as reduced security of supplies, leading to higher probability of supply interruption when several effects, such as oil shortage, electric import failure, technical breakdowns, cold winters and reduced hydropower supplies coincide with delays in power station construction. It is concluded that completion of the Zwentendorf nuclear power station is essential. (G.M.E.)

  4. Nuclear energy data 1993

    International Nuclear Information System (INIS)

    1994-01-01

    A questionnaire on Electricity generation, Nuclear Power and Fuel Cycle Data is distributed annually to OECD Member countries. In the questionnaire of January 1993, countries were asked to provide historical data for 1991 and 1992 and most likely projections up to the year 2010. The replies to the questionnaire or the results of the discussions between national correspondents and the Secretariat are presented in this Booklet. The Secretariat has, in some cases, referred to IEA's electricity related data and IAEA's nuclear plant data. Where data were still unavailable, the Secretariat made estimates based on information from other sources. The total capacity of those plants connected to the grid, under construction and firmly committed in 1992 was 289.3 GWe but, based both on questionnaire replies and Secretariat estimates, is expected to rise to 318.0 GWe in 2010 despite an allowance of 20.2 GWe to be taken out of service. The electricity generation and production data for fuel cycle services refer to these facilities located within the country, and thus exclude imports. The fuel cycle requirements, however, refer to the amounts of fuel cycle materials and services necessary for national nuclear programmes. 11 tabs., 6 figs

  5. Nuclear Energy Stakeholders in Argentina

    International Nuclear Information System (INIS)

    Gadano, Julian

    2017-01-01

    Mr Gadano, Undersecretary for Nuclear Energy, Argentina spoke from the perspective of a country looking forward to becoming a member of the NEA. He reviewed the place of nuclear energy in his country's energy mix and called attention to its role in positively addressing the global challenges of climate change and energy security. Mr Gadano also described the federal system which governs Argentina. Drawing on his expertise as a lawmaker and nuclear regulator but also as an academic sociologist, he stressed that reaching agreement on siting initiatives for example requires a sustainable relation with stakeholders, including regional governments. This is important because in the end, 'the best project is the one you can finish'

  6. Emerging trends in nuclear energy

    International Nuclear Information System (INIS)

    Weinberg, A.M.

    1984-01-01

    Nuclear energy is faltering in many places - especially in the USA: should it be written off. The author sees underlying trends that justify a more optimistic view of nuclear energy's future - the continuing tendency for the electricity intensity of economic activity to rise while the total energy intensity falls; a consistently favourable price trend for electricity compared with energy prices generally - a trend that may become more favourable if his judgment that nuclear plants will turn out to be very long-lived is borne out by events; the substitution of electricity-based processes in industry for older processes; and the development of ultra-safe reactors which will remove once and for all the fears of accidents such as the one that occurred at Three Mile Island. (author)

  7. A comparative analysis of mechanisms of fast light particles production in nucleus-nucleus collisions at low and intermediate energies

    CERN Document Server

    Denikin, A S

    2002-01-01

    The dynamics and the mechanisms of formation of pre-equilibrium light particles in nucleus-nucleus collisions at low and intermediate energies are discussed in terms of a classical four-body model. The energy and angular distributions of light particles have been calculated. It has been found that at energies lower than 50A MeV the formation of the most high-energy part of the nuclear spectrum occurs at the expense of the acceleration of light target particles with the mean field of the projectile. The obtained data are in good agreement with available experimental data

  8. Section for nuclear physics and energy physics - Annual report

    International Nuclear Information System (INIS)

    1994-08-01

    This annual report summarizes the research and development activities of the Section for Nuclear Physics and Energy Physics at the University of Oslo in 1993. It includes experimental and theoretical nuclear physics, as well as other fields of physics in which members of the section have participated. The report describes completed projects nd work currently in progress. As in previous years, the experimental activities in nuclear physics have mainly been centered around the Cyclotron Laboratory with the SCANDITRONIX MC-35 Cyclotron. Using the CACTUS multidetector system, several experiments have been completed. Some results have been published while more data remains to be analyzed. In experimental nuclear physics the section staff members are engaged within three main fields: nuclei at high temperature, high spin nuclear structure and high and intermediate energy nuclear physics. In theoretical physics the group is concerned with the many-body description of nuclear properties as well as with the foundation of quantum physics

  9. Nuclear power and energy planning

    International Nuclear Information System (INIS)

    Jones, P.

    1990-11-01

    With the rapid depletion of conventional energy sources such as coal and oil and the growing world demand for energy the question of how to provide the extra energy needed in the future is addressed. Relevant facts and figures are presented. Coal and oil have disadvantages as their burning contributes to the greenhouse gases and they will become scarcer and more expensive. Renewable sources such as wind and wave power can supply some but not all future energy requirements. The case made for nuclear power is that it is the only source which offers the long term prospect of meeting the growing world energy demand whilst keeping energy costs close to present levels and which does not add to atmospheric pollution. Reassurance as to the safety of nuclear power plants and the safe disposal of radioactive wastes is given. (UK)

  10. September 11 and Nuclear Energy

    International Nuclear Information System (INIS)

    Knapp, V.

    2002-01-01

    The terrible September 11 attacks have demonstrated the ability of international terrorists to carry out well-planned and complex operations that can kill thousands of citizens. The potential for biological, chemical and nuclear terrorism has increased and will remain as long as their underlying causes. Nuclear installations could be the targets, or the sources of materials usable for terrorism. Whilst thick containment buildings around nuclear reactors are unlikely to be breached, some installations, such as spent fuel pond are more vulnerable. The safety of nuclear installations must be reconsidered taking into account some new initiating events hitherto considered of very low probability. A resistance against nuclear power plant sabotage by terrorist group penetrating into reactor building, is a controversial topic. Measures against diversion of nuclear materials, which could be used in nuclear terrorism, must be reviewed. The danger of diversion from giant military stocks of highly enriched uranium and plutonium by far exceeds that from peaceful use of nuclear energy. Measures to neutralize these stocks, such as dilution of highly enriched uranium, should be speeded up and have a priority in public concern. As for the nuclear power stations, public should be informed about the recommendations of IAEA for better physical protection of nuclear materials prepared in 1999 (INFCIRC 225/Rev.4) and about Additional protocol to inadequate Convention on Physical Protection of Nuclear Materials from 1980, which is in a process of ratification. For acceptable nuclear future public must be aware that all required measures to eliminate unacceptable risks resulting from terrorist activity against nuclear installations will be undertaken. (author)

  11. Electronic emission produced by light projectiles at intermediate energies

    International Nuclear Information System (INIS)

    Bernardi, G.C.

    1989-01-01

    Two aspects of the electronic emission produced by light projectiles of intermediate energies have been studied experimentally. In the first place, measurements of angular distributions in the range from θ = 0 deg -50 deg induced by collisions of 50-200 keV H + incident on He have been realized. It was found that the double differential cross section of electron emission presents a structure focussed in the forward direction and which extends up to relatively large angles. Secondly, the dependence of the double differential cross section on the projectile charge was studied using H + and He 3 2+ projectiles of 50 and 100 keV/amu incident on He. Strong deviations from a constant scaling factor were found for increasing projectile charge. The double differential cross sections and the single differential cross sections as a function of the emission angle, and the ratios of the emissions induced by He 3 2+ and H + at equal incident projectile velocities are compared with the 'Continuum Distorted Wave-Eikonal Initial State' (CDW-EIS) approximation and the 'Classical Trajectory Monte Carlo' (CTMC) method. Both approximations, in which the potential of the projectile exercises a relevant role, reproduce the general aspects of the experimental results. An electron analyzer and the corresponding projectile beam line has been designed and installed; it is characterized by a series of properties which are particularly appropriate for the study of double differential electronic emission in gaseous as well as solid targets. The design permits to assure the conditions to obtain a well localized gaseous target and avoid instrumental distortions of the measured distributions. (Author) [es

  12. Nuclear energy and the environment

    International Nuclear Information System (INIS)

    Skjoeldebrand, R.

    1994-01-01

    The thesis of this paper is that the world will need more energy and not less in the coming decades but that this enormous energy consumption entails dangers to the environment not only locally but regionally and internationally through the emissions from the burning of fossil fuels which now provide 85% of the world's commercial energy supply. The solution to this problem is nuclear power. It does not contribute to global warming. 12 figs

  13. Hydrogen Production Using Nuclear Energy

    Energy Technology Data Exchange (ETDEWEB)

    Verfondern, K. [Research Centre Juelich (Germany)

    2013-03-15

    One of the IAEA's statutory objectives is to 'seek to accelerate and enlarge the contribution of atomic energy to peace, health and prosperity throughout the world.' One way this objective is achieved is through the publication of a range of technical series. Two of these are the IAEA Nuclear Energy Series and the IAEA Safety Standards Series. According to Article III.A.6 of the IAEA Statute, the safety standards establish 'standards of safety for protection of health and minimization of danger to life and property'. The safety standards include the Safety Fundamentals, Safety Requirements and Safety Guides. These standards are written primarily in a regulatory style, and are binding on the IAEA for its own programmes. The principal users are the regulatory bodies in Member States and other national authorities. The IAEA Nuclear Energy Series comprises reports designed to encourage and assist R and D on, and application of, nuclear energy for peaceful uses. This includes practical examples to be used by owners and operators of utilities in Member States, implementing organizations, academia, and government officials, among others. This information is presented in guides, reports on technology status and advances, and best practices for peaceful uses of nuclear energy based on inputs from international experts. The IAEA Nuclear Energy Series complements the IAEA Safety Standards Series. Nuclear generated hydrogen has important potential advantages over other sources that will be considered for a growing hydrogen share in a future world energy economy. Still, there are technical uncertainties in nuclear hydrogen processes that need to be addressed through a vigorous research and development effort. Safety issues as well as hydrogen storage and distribution are important areas of research to be undertaken to support a successful hydrogen economy in the future. The hydrogen economy is gaining higher visibility and stronger political support in several parts of the

  14. The nuclear energy policy challenges

    International Nuclear Information System (INIS)

    Hanne, H.

    2009-01-01

    At a time when the nuclear question mobilizes attentions and when a new cycle of debates about non-proliferation opens up, the author recalls the constraints and challenges of a nuclear power generation policy. After a brief history of the development of nuclear energy in France and in the rest of the world, the author presents the risks linked with this energy source (TMI and Chernobyl accidents), the particularities of the fuel cycle with its safety and security aspects, and the promises of some past and future reactor technologies (FBR's and fusion reactors). Then, the author stresses on the importance of investments in this domain as illustrated by the launching of new nuclear programs in France, UK, Italy, Finland and in the US, and by the willing of some emerging countries to develop this energy source (China, India, United Arab Emirates, Jordan..). Finally, nuclear energy must not be considered as a privilege of developed countries but should benefit to the rest of the world as well since it promotes economic development thanks to an abundant and cheap energy. (J.S.)

  15. Marketing nuclear energy

    International Nuclear Information System (INIS)

    Liles, L.A.

    1980-01-01

    It is shown how the nuclear industry can present itself to the American public in a more favorable light. Two pieces of writing concerning the same event, the reactor accident at the Enrico Fermi reactor near Detroit, Michigan in 1966, is analyzed for clarity and readability. Seven principles of persuasive communication, as outlined by R.H.S. Crossman who was in charge of Allied psychological warfare in Europe during World War II, are quoted along with examples of their violation, and suggestions given how they might be improved. 10 refs

  16. Bayda backs nuclear energy

    International Nuclear Information System (INIS)

    Wyatt, A.

    1978-01-01

    The findings and recommendations of the Cluff Lake inquiry are summarized. The public inquiry was conducted by Mr. Justice E.D. Bayda and two other commissioners at the behest of the government of the Province of Saskatchewan to consider the desirability of the Amok mining proposal in particular, and of nuclear power in general. The conclusions are favourable to both. The topics considered in the report include: reactor safety, waste disposal, proliferation, terrorism, and the ethical views of proponents and opponents. (N.D.H.)

  17. CVD in nuclear energy

    International Nuclear Information System (INIS)

    Nickel, H.

    1981-08-01

    CVD-deposited pyrocarbon, especially the coatings of nuclear fuel kernels show a structure depending on many parameters such as deposition temperature, nature and pressure of the pyrolysis gas, nature of the substrate, geometry of the deposition system, etc. Because of the variety of pyrocarbon different characterization methods have been developed or qualified for this new application. Additionally classical characterization procedures are available. Beside theoretical aspects concerning the formation and deposition mechanism of pyrocarbon from the gas phase the behaviour of such coatings under irradiation with fast neutrons is discussed. (orig.) [de

  18. Society response to nuclear energy

    International Nuclear Information System (INIS)

    Santamaria, N. C.

    2007-01-01

    Energy demand in the world is growing increasingly, among other factors due to economic development. Every way of producing electricity has got their own drawbacks and has implicit environmental impact. Among all the energy sources, nuclear energy is the most polemic because of the way it is presented by the mass media. This aspect provokes controversy to occidental societies which reject this kind of energy with arguments normally based on a wrong and insufficient knowledge of the matter. The antinuclear discourse, promoted late in the seventies, has gone deeply into the collective social unconscious and has undermined public acceptance of nuclear energy due to the fact, deeply exploited by antinuclear groups, of linking nuclear energy with the atomic bombing of Hiroshima and Nagasaki. In this sense, it is important to mention that in Japan there was a profound resentment and opposition to nuclear energy, because the memory of the nuclear bombings was permanently alive. However when the Japanese government told its people that this energy was necessary to boost their industrial development, Japanese citizens in an unprecedented attitude of patriotism overcame their most antagonist feelings, in order to contribute to the industrial development of their country. The result was that most of them voted in favour. Presently Japan gets 30% of its energy by means of 56 nuclear power plants and 1 more is under construction. Antinuclear groups took as their best emblem the accident of Chernobyl to justify their opposition to the nuclear power plants. The manipulation of this accident has been one of the most shameful in the nuclear history. It is widely known among the experts that the reactor used in Chernobyl was a type of military plutonium converter with a positive temperature reactivity coefficient, which made very dangerous its functioning. Any nuclear regulatory commission in democratic and responsible countries would have never authorized the use of this reactor

  19. The public and nuclear energy

    International Nuclear Information System (INIS)

    Agrafiotis, D.; Morlat, G.; Pages, J.P.

    1977-01-01

    To explain why an individual or public opinion is for or against the peaceful uses of nuclear energy, one should not consider only the dimension of the risk involved, as experts on radiation protection and safety will often do. Many other dimensions should be considered, all the more as the nuclear problem is gaining importance on a national level, becoming the topic of the day in the press and other media and the subject of definite standpoints on the part of political parties and social groups. An investigation carried out by the Protection Division of the French Atomic Energy Commission has made it possible to specify the socio-cultural dimensions at the origin of the attitudes taken on the nuclear problem in France. The nuclear topic was therefore compared with other current topics of interest to public opinion; this comparison was made possible by means of an attitude survey covering various social groups. A model of social perception was thus developed. (author)

  20. Peripheral collisions of heavy ions induced by 40Ar at intermediate energies: giant resonance high energy structures and projectile fragmentation

    International Nuclear Information System (INIS)

    Blumenfeld, Y.

    1987-09-01

    The results obtained in similar studies at low incident energies are first of all reviewed. The time of flight spectrometer built for the experiments is then described. A study of the properties of the projectile-like fragments shows numerous deviations from the relativistic energy fragmentation model. Evidence for a strong surface transfer reaction component is given and the persistence of mean field effects at intermediate energies is stressed. A calculation of the contribution of the transfer evaporation mechanism to the inelastic spectra shows that this mechanism is responible for the major part of the background measured at high excitation energy and can in some cases induce narrow structures in the spectra. The inelastic spectra shows a strong excitation of the giant quadrupole resonance. In the region between 20 and 80 MeV excitation energy narrow structures are present for all the studied systems. Statistical and Fourier analysises allow to quantify the probabilities of existence, the widths and the excitation energies of these structures. A transfer evaporation hypothesis cannot consistently reproduce all the observed structures. The excitation energies of the structures can be well described by phenomenological laws where the energies are proportional to the -1/3 power of the target mass. Complete calculations of the excitation probabilities of giant resonances and multiphonon states are performed within a model where the nuclear excitation are calculated microscopically in the Random Phase Approximation. It is shown that a possible interpretation of the structures is the excitation of multiphonon states built with 2 + giant resonances [fr