PROPERTIES OF gamma-DECAYING ISOMERS IN THE Sn-100 REGION REVISITED

Abstract

The study of nuclei in the region around the N = Z doubly-magic nucleus Sn-100 has been of long standing interest for the nuclear structure and nuclear astrophysics. Recently, Park et al. have reported on properties of gamma-decaying isomers and isomeric ratios in the vicinity of Sn-100. That experiment was performed at the Radioactive Ion Beam Factory (RIBF) of the RIKEN Nishina Center in Japan as a part of the EURICA campaign. Neutron-deficient nuclei were produced in a fragmentation reaction of a Xe-124 primary beam on a 9 Be target at an energy of 345 MeV/A. Secondary ions were separated and identified in the BigRIPS fragment separator and implanted in the silicon detector array WAS3ABi. The data presented here were obtained in another experiment performed at the RIBF using the same reaction but slightly different separator settings. New results of ratios of isomeric population and half-lives of gamma-decaying isomers populated in the experiment are presented.