December 2011

Journal

Shape coexistence along N = 40

By:
Liddick, S. N.; Suchyta, S.; Abromeit, B.; Ayres, A.; Bey, A.; Bingham, C. R.; Bolla, M; Carpenter, M.; Cartegni, L.; Chiara, C.; Crawford, H.; Darby, I.; Grzywacz, R.; Gurdal, G.; Ilyushkin, S.; Larson, N.; Madurga, M.; McCutchan, E.; Miller, D; Padgett, Stephen; Paulauskas, Stanley; Pereira, J.; Rajabali, M.; Rykaczewski, Krzysztof P; Vinnikova, S.; Walters, W.; Zhu, S.
Journal Name:
Physical Review C
Page Number:
061305
Volume:
84
Issue Number:
6
Publication Date:
December 2011
View DOI Listing:
https://doi.org/10.1103/PhysRevC.84.061305

Abstract

The low-energy level structures of 64 25Mn39 and 66 25Mn41 were investigated through both the decay of Mn metastable states and the population of levels following the decay of 64Cr and 66Cr. The deduced level schemes and tentatively assigned spins and parities suggest the coexistence of spherical and deformed configurations above and below N = 40 for the odd-odd Mn isotopes. The low-energy deformed configurations are attributed to the coupling between a proton in a K = 1/2− level with neutrons in either the K = 1/2− or K = 3/2+ levels originating from the p3/2, p1/2, and g9/2 single-particle states, respectively.

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