1. decay of 72Co and microsecond isomers in even-mass neutron-rich nickel isotopes.
- Author
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C R Bingham, M M Rajabali, R Grzywacz, S N Liddick, C Mazzocchi, I G Darby, S V Ilyushkin, J A Winger, W Królas, K P Rykaczewski, P F Mantica, T Baumann, T N Ginter, D Weisshaar, M Karny, K Miernik, M Pfützner, and J C Batchelder
- Subjects
BETA decay ,GAMMA ray spectrometry ,NUCLEAR isomers ,NICKEL isotopes ,NUCLEAR shell theory - Abstract
A new excited state at 2164 keV has been identified in
72 Ni with tentative spin and parity of 4+ based on comparison to shell model calculations. This level is suggested to be populated via the β-decay of an isomeric state in72 Co, and is postulated to be one of the key states that play a role in the disappearance of isomers in Ni. The known low-energy levels in72 Ni are compared with results of shell model calculations using the NR78 interaction to follow the seniority of the observed states. In addition, the half-life of the 8+ isomer in76 Ni has been measured as 630(90) ns and the full cascade of transitions from this isomer has been verified experimentally in this work. [ABSTRACT FROM AUTHOR]- Published
- 2014
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