Abstract
New sub-s isomers have been observed in the neutron-rich Sn isotopes. nuclei have been produced in a relativistic fission reaction of on a target at 750 and by the fragmentation of at 600 populating high-spin yrast states. In addition to the already known s isomers, three new ones with sub-s half-lives have been observed. These yrast isomers are the high-spin members of the and , seniority multiplets leading to isomeric () and () states, respectively. Added to the already known s isomers in this region the current work completes the systematic information of neutron-hole excitations toward the filling of the last orbital at . The results are discussed in the framework of state-of-the-art shell-model calculations using realistic interactions.
4 More- Received 27 March 2008
DOI:https://doi.org/10.1103/PhysRevC.77.064313
©2008 American Physical Society