Abstract
Isomers in near-spherical , antimony isotopes are reported here for the first time using fusion-fission reactions between and a pulsed beam of energy, 1150 MeV. γ rays were observed from the decay of isomeric states with half-lives, and s, and angular momenta and , in , respectively. These states are proposed to correspond to configurations, coupled to an odd or proton. Nanosecond isomers were also identified at [ ns] in and [ ns] in . Information on spins and parities of states in these nuclei was obtained using a combination of angular correlation and intensity-balance measurements. The configurations of states in these nuclei are discussed using a combination of spin/energy systematics and shell-model calculations for neighboring tin isotones and antimony isotopes.
2 More- Received 31 May 2007
DOI:https://doi.org/10.1103/PhysRevC.77.034311
©2008 American Physical Society