Abstract
Heavy neutron-rich nuclei were populated via the fragmentation of a GeV Pb beam. Secondary fragments were separated and identified and subsequently implanted in a passive stopper. By the detection of delayed rays, isomeric decays associated with these nuclei have been identified. A total of 49 isomers were detected, with the majority of them observed for the first time. The newly discovered isomers are in Hg, Au, Pt, Ir, Os, Re, W, and Ta. Possible level schemes are constructed and the structure of the nuclei discussed. To aid the interpretation, shell-model as well as BCS calculations were performed.
11 More- Received 2 August 2011
DOI:https://doi.org/10.1103/PhysRevC.84.044313
©2011 American Physical Society