Mirror decay ofJ. Huikari1, M. Oinonen2, 3, A. Algora4, J. Cederkäll3, S. Courtin5, P. Dessagne5, L. Fraile3, S. Franchoo3, H. Fynbo3, W.X. Huang1, A. Jokinen1, 2, 3, A. Knipper5, F. Marechal5, C. Miehé5, E. Nacher4, K. Peräjärvi3, E. Poirier5, L. Weissman3, J. Äystö1, 2, 3 and the ISOLDE Collaboration5
1 Department of Physics, University of Jyväskylä, P.O. Box 35, FIN-40351, Jyväskylä, Finland
2 Helsinki Institute of Physics, FIN-00014 University of Helsinki, Finland
3 CERN, CH-1211 Geneva 23, Switzerland
4 Instituto de Física Corpuscular, CSIC - University of Valencia, E-46071 Valencia, Spain
5 Institut de Recherches Subatomiques, F-67037 Strasbourg Cedex 2, France
(Received: 26 September 2002 / Revised version: 24 October 2002 / Published online: 18 February 2003)
The -decay of to its mirror nucleus was studied at the ISOLDE PSB facility at CERN by means of -delayed and proton spectroscopy. The decay Q-value and -delayed intensity were measured for the first time. These results, MeV and , together with accurate measurements of the -decay half-life and -delayed proton branching ratio yielded the Gamow-Teller strength 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.
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 - .
© Società Italiana di Fisica, Springer-Verlag 2003