1. $\beta $ decay of72Co and microsecond isomers in even-mass neutron-rich nickel isotopes
- Author
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J. C. Batchelder, K. P. Rykaczewski, D. Weisshaar, Iain Darby, S. V. Ilyushkin, W. Krolas, T. N. Ginter, P. F. Mantica, Mustafa Rajabali, Robert Grzywacz, Thomas Baumann, C. Mazzocchi, M. Pfützner, C. R. Bingham, K. Miernik, Sean Liddick, M. Karny, and J. A. Winger
- Subjects
Physics ,Nuclear and High Energy Physics ,Isotope ,010308 nuclear & particles physics ,chemistry.chemical_element ,Parity (physics) ,01 natural sciences ,Beta decay ,Microsecond ,Nickel ,chemistry ,Excited state ,0103 physical sciences ,Neutron ,Gamma spectroscopy ,Atomic physics ,010306 general physics - Abstract
A new excited state at 2164 keV has been identified in 72Ni with tentative spin and parity of 4+ based on comparison to shell model calculations. This level is suggested to be populated via the ?-decay of an isomeric state in 72Co, 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 in 72Ni 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 in 76Ni has been measured as 630(90) ns and the full cascade of transitions from this isomer has been verified experimentally in this work.
- Published
- 2014
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