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Core excitations beyond maximally aligned configurations in I-123

P. Singh A.K. Singh A.N. Wilson J. Rogers H. Hubel A. Burger S. Chmel I. Ragnarsson G. Sletten B. Herskind M.P. Carpenter R.V.F. Janssens T.L. Khoo F. G. Kondev T. Lauritsen S. Zhu A. Korichi 1 H. Ha 1 P. Fallon B.M. Nyako J. Timar K. Juhasz
CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière : UMR8609
Abstract : High-spin states in I-123 have been populated in the Se-80(Ca-48, p4n) I-123 reaction at 207 MeV and gamma-ray coincidence events have been recorded with the Gammasphere spectrometer. The level scheme of I-123 has been extended up to spin I = 63/2. The nucleus undergoes a shape transition from moderately deformed states with collective rotation at low spins to noncollective oblate configurations at higher spins. Maximally aligned terminating states involving all nine particles outside the Sn-114 core and states with one particle antialigned are identified. A large number of weak transitions feed the terminating states. Cranked Nilsson-Strutinsky calculations have been performed to determine possible configurations for the observed energy levels.
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Submitted on : Friday, April 6, 2012 - 4:18:08 PM
Last modification on : Wednesday, September 16, 2020 - 5:43:07 PM

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P. Singh, A.K. Singh, A.N. Wilson, J. Rogers, H. Hubel, et al.. Core excitations beyond maximally aligned configurations in I-123. Physical Review C, American Physical Society, 2012, 85, pp.034319. ⟨10.1103/PhysRevC.85.034319⟩. ⟨in2p3-00685892⟩



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