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, and M. Wiedeking
Phys. Rev. C 73, 044322 – Published 24 April 2006

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.

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  • Received 1 March 2006

DOI:https://doi.org/10.1103/PhysRevC.73.044322

©2006 American Physical Society

Authors & Affiliations

S. N. Liddick1,2, P. F. Mantica1,2, B. A. Brown1,3, M. P. Carpenter4, A. D. Davies1,3, M. Horoi5, R. V. F. Janssens4, A. C. Morton1, W. F. Mueller1, J. Pavan6, H. Schatz1,3, A. Stolz1, S. L. Tabor6, B. E. Tomlin1,2, and M. Wiedeking6

  • 1National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
  • 2Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
  • 3Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
  • 4Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
  • 5Department of Physics, Central Michigan University, Mount Pleasant, Michigan 48859, USA
  • 6Department of Physics, Florida State University, Tallahassee, Florida 32306, USA

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Issue

Vol. 73, Iss. 4 — April 2006

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