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Shape coexistence along N = 40...

Publication Type
Journal
Journal Name
Physical Review C
Publication Date
Page Number
061305
Volume
84
Issue
6

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.