Half-life and spin of 60Mng

S. N. Liddick, P. F. Mantica, B. A. Brown, M. P. Carpenter, A. D. Davies, M. Horoi, R. V.F. Janssens, A. C. Morton, W. F. Mueller, J. Pavan, H. Schatz, A. Stolz, S. L. Tabor, B. E. Tomlin, M. Wiedeking

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Abstract

A value of 0.28±0.02 s has been deduced for the half-life of the ground state of Mn60, in sharp contrast to the previously adopted value of 51±6 s. Access to the low-spin Mn60 ground state was accomplished via β decay of the 0+ Cr60 parent nuclide. New low-energy states in Mn60 have been identified from β-delayed γ-ray spectroscopy. The new, shorter half-life of 60Mng is not suggestive of isospin-forbidden β decay, and new spin and parity assignments of 1+ and 4+ have been adopted for the ground and isomeric β-decaying states, respectively, of Mn60.

Original languageEnglish
Article number044322
JournalPhysical Review C - Nuclear Physics
Volume73
Issue number4
DOIs
StatePublished - 2006

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