{beta} decay of the proton-rich T{sub z}={minus}1/2 nucleus, {sup 71}Kr
- Department of Physics, University of Jyvaeskylae, P.O. Box 35, FIN-40351, Jyvaeskylae (Finland)
- CERN, PPE Division, CH-1211 Geneva 23 (Switzerland)
- CRN, CNRS-IN2P3, Universite Louis Pasteur, B.P. 28, F-67037 Strasbourg (France)
- Instituut voor Kern-en Stralingsfysica, University of Leuve n, Celestijnenlaan 200 D, B-3001 Leuven (Belgium)
- IPN, CNRS-IN2P3, Universite Claude Bernard, F-69622 Villeurb anne (France)
- St. Petersburg Nuclear Physics Institute, Gatchina, 188350 St. Pete rsburg, Russia; CERN, CH-1211 Geneva 23 (Switzerland)
{beta} decay of the T{sub z}={minus}1/2 nuclide {sup 71}Kr has been studied at the ISOLDE PSB Facility at CERN. {sup 71}Kr ions were produced in spallation reactions in a Nb foil using the 1 GeV proton beam and studied by means of {beta}-delayed proton, {beta}- and {gamma}-ray spectroscopy. The half-life and the {beta}-decay energy of {sup 71}Kr were determined using the decay of protons and positrons. These results: T{sub 1/2}=100{plus_minus}3ms and Q{sub EC}=10.14{plus_minus}0.32MeV and the first observation of the {beta} branch to the 207 keV level in {sup 71}Br makes the extension of the systematics of Gamow-Teller matrix elements of mirror nuclei up to A=71 possible. The Gamow-Teller strength of the same magnitude as that of the fp-shell mirror nuclei is observed for the ground-state transition. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 528159
- Journal Information:
- Physical Review, C, Journal Name: Physical Review, C Journal Issue: 2 Vol. 56; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English
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