Observation of states beyond band termination in<sup>156, 157, 158</sup>Er and strongly deformed structures in<sup>173, 174, 175</sup>Hf

Riley, M. A.; Djongolov, M.; Evans, A. O.; Hartley, D. J.; Janssens, R. V. F.; Paul, E. S.; Pipidis, A.; Simpson, John; Aguilar, A.; Appelbe, D. E.; Bingham, C. R.; Campbell, D. B.; Carpenter, M. P.; Chowdhury, P.; Choy, P. T. W.; Clark, R. M.; Cromaz, M.; Cullen, D. M.; Danchev, M.; Dracoulis, George; Fallon, P.; Görgen, A.; Hagemann, G.B.; Joss, D. T.; Kaye, R. A.; Khoo, T. L.; Kondev, F. G.; Laird, R. W.; Lagergren, K.; Lauritsen, T.; Macchiavelli, A. O.; McClain, B.; Moore, E. F.; Mukherjee, G.; Ngijoi-Yogo, E.; Nolan, P. J.; Park, H. I.; Riedinger, L. L.; Sletten, G.; Walker, P. M.; Ward, D. R.; Ragnarsson, I.; Saric, Fikret; Zhang, Jingye

doi:10.1088/0031-8949/2006/t125/028

Cited by 7 publications

(1 citation statement)

References 21 publications

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“…Higher-spin states, beyond the full alignment of the valence particles, can only be created by energetically expensive particle-hole excitations from the core. This type of excitation was observed, e.g., in 155−158 Er [13,[16][17][18], where many weakly populated states, lying between 1.0 and 2.5 MeV above the terminating states, were delineated. Such excitations, feeding maximally aligned states, were also reported in 121 I [10].…”

Section: Introductionmentioning

confidence: 84%

Core excitations beyond maximally aligned configurations in123I

Singh

Wilson

et al. 2012

Phys. Rev. C

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High-spin states in 123 I have been populated in the 80 Se( 48 Ca,p4n) 123 I reaction at 207 MeV and γ -ray coincidence events have been recorded with the Gammasphere spectrometer. The level scheme of 123 I 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 114 Sn 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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