Core excitations beyond maximally aligned configurations in I-123

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.

Singh, A. K. (author)
Wilson, A. N. (author)
Rogers, J. (author)
Huebel, H. (author)
Buerger, A. (author)
Chmel, S. (author)
Ragnarsson, IngemarLund University,Lunds universitet,Matematisk fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Mathematical Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)matf-ira (author)
Sletten, G. (author)
Herskind, B. (author)
Carpenter, M. P. (author)
Janssens, R. V. F. (author)
Khoo, T. L. (author)
Kondev, F. G. (author)
Lauritsen, T. (author)
Zhu, S. (author)
Korichi, A. (author)
Ha, Hoa (author)
Fallon, P. (author)
Nyako, B. M. (author)
Timar, J. (author)
Juhasz, K. (author)
Matematisk fysikFysiska institutionen (creator_code:org_t)

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