Low-energy structure of Mn 61 populated following β decay of <mml:…
2009; American Institute of Physics; Volume: 79; Issue: 5 Linguagem: Inglês
10.1103/physrevc.79.054320
ISSN1538-4497
AutoresH. L. Crawford, P. F. Mantica, J. S. Berryman, R. Broda, B. Fornal, C. R. Hoffman, N. Hoteling, R. V. F. Janssens, S. M. Lenzi, J. Pereira, J. Stoker, S. L. Tabor, W. B. Walters, X. Wang, S. Zhu,
Tópico(s)Atomic and Molecular Physics
Resumo$\ensuremath{\beta}$ decay of the $^{61}\mathrm{Cr}{}_{37}$ ground state has been studied. A new half-life of $233\ifmmode\pm\else\textpm\fi{}11$ ms has been deduced, and seven delayed $\ensuremath{\gamma}$ rays have been assigned to the daughter $^{61}\mathrm{Mn}{}_{36}$. The low-energy level structure of $^{61}\mathrm{Mn}{}_{36}$ is similar to that of the less neutron-rich $^{57,59}\mathrm{Mn}$ nuclei. The odd-${A}_{25}$Mn isotopes follow the systematic trend in the yrast states of the even-even, $Z+1$ ${}_{26}$Fe isotopes, and not that of the $Z\ensuremath{-}1$ ${}_{24}$Cr isotopes, where a possible onset of collectivity has been suggested to occur already at $N=36$.
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