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Mirror decay of 75Sr |
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| Authors: | J Huikari M Oinonen A Algora J Cederkäll S Courtin P Dessagne L Fraile S Franchoo H Fynbo WX Huang A Jokinen A Knipper F Marechal C Miehé E Nacher K Peräjärvi E Poirier L Weissman J Äystö |
| Institution: | Department of Physics, University of Jyv?skyl?, P.O. Box 35, FIN-40351, Jyv?skyl?, Finland, FI Helsinki Institute of Physics, FIN-00014 University of Helsinki, Finland, FI Instituto de F?sica Corpuscular, CSIC - University of Valencia, E-46071 Valencia, Spain, ES CERN, CH-1211 Geneva 23, Switzerland, CH Institut de Recherches Subatomiques, F-67037 Strasbourg Cedex 2, France, FR |
| Abstract: | The β-decay of 75Sr to its mirror nucleus 75Rb was studied at the ISOLDE PSB facility at CERN by means of β-delayed γ and proton spectroscopy. The decay Q-value and β-delayed γ intensity were measured for the first time. These results, 10.60±0.22 MeV and 4.5+1.9 -0.7%, together with accurate measurements of the β-decay half-life and β-delayed proton branching ratio yielded the Gamow-Teller strength 0.35±0.05 for the mirror transition. Implications of the results on studies of deformation effects and on the path of the rapid proton capture process are discussed. Received: 26 September 2002 / Accepted: 30 October 2002 / Published online: 18 February 2003 RID="a" ID="a"e-mail: jussi.huikari@phys.jyu.lfi Communicated by D. Schwalm |
| Keywords: | PACS 23 40 Hc Relation with nuclear matrix elements and nuclear structure – 21 10 Tg Lifetimes – 23 50 +z Decay by proton emission – 27 50 +e 59 ⩽ A ⩽ 89 |
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