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Phys. Rev. C 74, 034308 (2006) [5 pages]

First observation of high-spin states in 83Se

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N. Fotiades1,*, A. F. Lisetskiy2,†, J. A. Cizewski3, R. Krücken4, R. M. Clark5, P. Fallon5, I. Y. Lee5, A. O. Macchiavelli5, J. A. Becker6, B. A. Brown2, M. Horoi7, and W. Younes6
1Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
2National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
3Department of Physics and Astronomy, Rutgers University, New Brunswick, New Jersey 08903, USA
4Physik Department E12, Technische Universität München, D-85748 Garching, Germany
5Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
6Lawrence Livermore National Laboratory, Livermore, California 94550, USA
7Physics Department, Central Michigan University, Mount Pleasant, Michigan 48859, USA

Received 14 June 2006; published 8 September 2006

The level structure of 83Se was studied via prompt γ-ray spectroscopy of fragments following the fission of the compound nucleus 226Th formed in the 18O (91 MeV) + 208Pb fusion-evaporation reaction. The first four high-spin states above the 9/2+ ground state were established. The coupling of the neutron hole in the g9/2 orbital to the yrast states in the 84Se core can account for these states. The experimentally observed high-spin states are compared with predictions of shell-model calculations.

© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.74.034308
DOI:
10.1103/PhysRevC.74.034308
PACS:
23.20.Lv, 27.50.+e, 21.60.Cs, 25.70.Jj

*Corresponding author. Electronic address: fotia@lanl.gov

†Present address: Gesellschaft für Schwerionenforschung mbH, D-64291 Darmstadt, Germany.

 
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