γ-ray spectroscopy of neutron-deficient 123Ce

J. F. Smith, L. J. Angus, E. S. Paul, C. J. Chiara, M. P. Carpenter, H. J. Chantler, P. T.W. Choy, C. N. Davids, M. Devlin, D. B. Fossan, S. J. Freeman, R. V.F. Janssens, N. S. Kelsall, T. Koike, D. R. Lafosse, D. G. Sarantites, D. Seweryniak, K. Starosta, R. Wadsworth, A. N. Wilson

研究成果: Article査読

2 被引用数 (Scopus)

抄録

Excited states have been identified in the very neutron-deficient Z=58 nucleus 123Ce. This is the most neutron-deficient odd-A cerium isotope in which excited states have been identified. The states have been unambiguously assigned to 123Ce by detecting de-excitation γ rays in coincidence with evaporated charged particles and neutrons. Three rotational bands, each consisting of at least eight E2 transitions, have been observed. The bands have tentatively been assigned to be based on neutrons in g7/2 and h11/2 orbitals. Two of the bands have been assigned to be signature partners, although no interband transitions have been observed. The aligned angular momenta of the bands have been studied in comparison with neighboring nuclei and with the results of Woods-Saxon cranking calculations. Observation of the deformation-dependent π(h11/2)2 quasiparticle alignment at 0.36MeV/ in each of the bands suggests a quadrupole deformation of β2 0.3, in good agreement with theoretical predictions for the suggested possible configuration assignments.

本文言語English
論文番号034303
ジャーナルPhysical Review C - Nuclear Physics
86
3
DOI
出版ステータスPublished - 2012 9 4

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学

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