Low-energy structure of 61Mn populated following β decay of 61Cr

2009/04/29 by H. L. Crawford, P. F. Mantica, Crawford, H. L. +27
Physics and Astronomy · #Nuclear physics research studies #Astronomical and nuclear sciences #Nuclear Physics and Applications

paper · pdf · doi:10.48550/arxiv.0904.4710

Abstract

β decay of the ⁶¹Cr₃₇ ground state has been studied. A new half-life of 233 +/- 11 ms has been deduced, and seven delayed γ rays have been assigned to the daughter, ⁶¹Mn₃₆. The low-energy level structure of ⁶¹Mn₃₆ is similar to that of the less neutron-rich ^57,59Mn nuclei. The odd-A ₂₅Mn isotopes follow the systematic trend in the yrast states of the even-even, Z + 1 ₂₆Fe isotopes, and not that of the Z - 1 ₂₄Cr isotopes, where a possible onset of collectivity has been suggested to occur already at N = 36.

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