Two-proton emission in the decay of Ar-31
18 pages, 7 figures, 2 tables.-- PACS nrs.: 23.40.Hc; 27.30.+t. | Several beta-delayed two-proton branches were observed in the decay of Ar-31, the most intense ones proceeding through the isobaric analogue state (IAS) in Cl-31. The mechanism of the two-proton emission is studied via the energy and ...
Two-proton decay of the isobaric analogue state of Ar-31
8 pages, 1 table, 4 figures.-- Journal issue title: "Nucleus-Nucleus Collisions". | We have studied several two proton branches in the β-decay of Ar-31, the most intensive ones proceeding through the isobaric analogue state (IAS) in Cl-31. The energy and angular correlations of the two protons origi...
The beta 2p decay mechanism of Ar-31 | The β2p decay mechanism of Ar-31
23 pages, 10 figures.-- PACS nrs.: 23.40.Hc; 27.30.+t.-- Printed version published on Sep 11, 2000. | We have measured the beta-decay of Ar-31 with a high granularity setup sensitive to multiparticle decay branches. Two-proton emission is observed from the isobaric analog state in Cl-31 to the four ...
Study of the giant Gamow-Teller resonance in nuclear β-decay: The case of Ar-32
19 pages, 9 figures, 3 tables. | Delayed proton and gamma emissions following the β-decay of Ar-32 have been studied. The half-life of Ar-32 is 98 ± 2 ms, and the T = 2 analogue state in Cl-32 lies at the excitation energy 5036 ± 12 keV. From the intensity of the feeding to this state the proton int...
12 pages, 6 figures, 2 tables. | The positron-neutrino correlation in the 0(+) --> 0(+) β-decay of Ar-32 was measured at ISOLDE by analyzing the effect of lepton recoil on the shape of the narrow proton group following the super-allowed decay. Our result is consistent with the standard model predict...
24 pages, 9 figures.-- PACS nrs.: 23.40.Hc; 27.20.+n; 24.80.+y.-- Available online 17 August 2001. | In β-decay experiments on C-9 at CERN/ISOLDE the β-strength was determined to the ground state, the 12.2 MeV excited state and the Isobaric Analog State (IAS) at 14.655 MeV in B-9. A large β-strength...
Fine structure in the beta-delayed proton decay of Ar-33
9 pages, 2 figures, 2 tables.-- PACS nrs.: 21.60.Cs; 23.40.−s; 27.30.+t; 29.30.Ep. | Low-energy beta-delayed protons from Ar-33 have been measured for the first time. The data reveal states, which, despite unfavourable barrier penetrability values, strongly decay to the first excited 2+ state in S-3...
Determination of the spin of Ar-31
5 pages, 3 figures, 1 table.-- PACS nrs.: 21.10.Hw; 23.40.Bw; 23.90.+w; 27.30.+t. | The beta-delayed proton emission from the lightest Ar-isotopes has been recorded with a high-granularity, large solid-angle Si-detector set-up. Proton energy shifts due to beta-recoil have been measured. We demonstra...
B(GT) strength from beta-decay measurements and inferred shape mixing in Kr-74
8 pages, 5 figures.-- PACS nrs.: 21.10.Pc, 23.40.Hc, 27.50.+e. | A total absorption spectrometer, dedicated to the study of very short-lived atomic species, has been built and installed at the CERN/ISOLDE mass separator. The beta decay of the neutron-deficient Kr-74 nucleus has been studied using th...
Ar-31 examined: New limit on the β-delayed three-proton branch
3 pages, 2 figures, 1 table.-- PACS nrs.: 23.90.+w, 23.40.Hc, 24.30.Gd, 27.30.+t. | We have remeasured the decay of Ar-31 with a setup sensitive to multiparticle decay branches and obtained a new limit of 1.1 x 10(-3) (99% C.L.) on the β-delayed three-proton branch between the isobaric analog state ...
A shell-model analysis of the proton emission from Cl-31 using Gamow wave functions
13 pages, 1 table, 4 figures.-- PACS nrs.: 23.40.Hc; 21.60.-n; 27.30.+t; 25.70.Ef.-- Printed version published Nov 19, 2001. | We study the proton emission process from particle-unbound levels of Cl-31. A standard shell-model calculation provides the single-particle structure of the excited states o...
Proton-proton correlations observed in two-proton decay of 19Mg and 16Ne
5 pages, 6 figures.-- PACS nrs.: 21.10.-k; 21.45.+v; 23.50.+z. | Proton-proton correlations were observed for the two-proton decays of the ground states of $^{19}$Mg and $^{16}$Ne. The trajectories of the respective decay products, $^{17}$Ne+p+p and $^{14}$O+p+p, were measured by using a tracking te...
Nuclear structure at the proton drip line: Advances with nuclear decay studies
81 pages, 2 tables, 33 figures.-- Available online Dec 15, 2007.-- Review paper. | The study of nuclear decay modes reveals a large panel of nuclear structure phenomena and allows us to investigate the behaviour of the atomic nucleus with an extreme imbalance of the number of neutrons and protons wi...