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Persistence of collective behavior at high spin in the N=88 nucleus Tb-153

Hartley, D. J.; Riley, M. A.; Wang, X.; Miller, S.; Janssens, R. V. F.; Paul, E. S.; Rees, J. M.; Simpson, J.; Riedinger, L. L. and Ayangeakaa, A. D., et al. (2015) In Physical Review C (Nuclear Physics) 91(5).
Abstract
Excited states in the N = 88 nucleus Tb-153 were observed up to spin similar to 40 in an experiment utilizing the Gammasphere array. The Tb-153 states were populated in a weak alpha 4n evaporation channel of the Cl-37 + Sn-124 reaction. Two previously known sequences were extended to higher spins, and a new decoupled structure was identified. The pi h(11/2) band was observed in the spin region where other N = 88 isotopes exhibit effects of prolate to oblate shape changes leading to band termination along the yrast line, whereas Tb-153 displays a persistent collective behavior. However, minor perturbations of the very highest state in both signatures of this h(11/2) band are observed, which perhaps signal the start of the transition towards... (More)
Excited states in the N = 88 nucleus Tb-153 were observed up to spin similar to 40 in an experiment utilizing the Gammasphere array. The Tb-153 states were populated in a weak alpha 4n evaporation channel of the Cl-37 + Sn-124 reaction. Two previously known sequences were extended to higher spins, and a new decoupled structure was identified. The pi h(11/2) band was observed in the spin region where other N = 88 isotopes exhibit effects of prolate to oblate shape changes leading to band termination along the yrast line, whereas Tb-153 displays a persistent collective behavior. However, minor perturbations of the very highest state in both signatures of this h(11/2) band are observed, which perhaps signal the start of the transition towards band termination. (Less)
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Physical Review C (Nuclear Physics)
volume
91
issue
5
publisher
American Physical Society
external identifiers
  • wos:000355312500005
  • scopus:84930966034
ISSN
0556-2813
DOI
10.1103/PhysRevC.91.057301
language
English
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yes
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8d76bdfc-f1e5-4518-b206-e2dc6291df22 (old id 7410623)
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2015-06-29 12:17:04
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@article{8d76bdfc-f1e5-4518-b206-e2dc6291df22,
  abstract     = {Excited states in the N = 88 nucleus Tb-153 were observed up to spin similar to 40 in an experiment utilizing the Gammasphere array. The Tb-153 states were populated in a weak alpha 4n evaporation channel of the Cl-37 + Sn-124 reaction. Two previously known sequences were extended to higher spins, and a new decoupled structure was identified. The pi h(11/2) band was observed in the spin region where other N = 88 isotopes exhibit effects of prolate to oblate shape changes leading to band termination along the yrast line, whereas Tb-153 displays a persistent collective behavior. However, minor perturbations of the very highest state in both signatures of this h(11/2) band are observed, which perhaps signal the start of the transition towards band termination.},
  articleno    = {057301},
  author       = {Hartley, D. J. and Riley, M. A. and Wang, X. and Miller, S. and Janssens, R. V. F. and Paul, E. S. and Rees, J. M. and Simpson, J. and Riedinger, L. L. and Ayangeakaa, A. D. and Carpenter, M. P. and Chiara, C. J. and Garg, U. and Hampson, P. and Hoffman, C. R. and Kondev, F. G. and Lauritsen, T. and Mason, P. J. R. and Matta, J. T. and Nolan, P. J. and Ollier, J. and Petri, M. and Radford, D. C. and Revill, J. P. and Zhu, S. and Ragnarsson, Ingemar},
  issn         = {0556-2813},
  language     = {eng},
  number       = {5},
  publisher    = {American Physical Society},
  series       = {Physical Review C (Nuclear Physics)},
  title        = {Persistence of collective behavior at high spin in the N=88 nucleus Tb-153},
  url          = {http://dx.doi.org/10.1103/PhysRevC.91.057301},
  volume       = {91},
  year         = {2015},
}