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Phys. Rev. C 73, 044322 (2006) [5 pages]

Half-life and spin of 60Mng

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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

Received 1 March 2006; published 24 April 2006

A value of 0.28±0.02 s has been deduced for the half-life of the ground state of 60Mn, in sharp contrast to the previously adopted value of 51±6 s. Access to the low-spin 60Mn ground state was accomplished via β decay of the 0+ 60Cr parent nuclide. New low-energy states in 60Mn 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 60Mn.

© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.73.044322
DOI:
10.1103/PhysRevC.73.044322
PACS:
23.40.-s, 23.20.Lv, 21.60.Cs, 27.50.+e
 
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