Persistence of collective behavior at high spin in the N=88 nucleus Tb153

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.; Ayangeakaa, A. D.; Carpenter, M. P.; Chiara, C. J.; Garg, U.; Hampson, P.; Hoffman, C. R.; Kondev, F. G.; Lauritsen, T.; Mason, P. J.  R.; Matta, J. T.; Nolan, P. J.; Ollier, J.; Petri, M.; Radford, D. C.; Revill, J. P.; Zhu, S.; Ragnarsson, I.

doi:10.1103/PhysRevC.91.057301

Title: Persistence of collective behavior at high spin in the $N = 88$ nucleus ${}^{153}{Tb}$

Journal Article · Fri May 01 00:00:00 EDT 2015 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.91.057301· OSTI ID:1391968

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.; Ayangeakaa, A. D.; Carpenter, M. P.; Chiara, C. J.; Garg, U.; Hampson, P.; Hoffman, C. R.; Kondev, F. G.; Lauritsen, T.; Mason, P. J. R.; Matta, J. T.; Nolan, P. J. 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.

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Research Organization:: Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science - Office of Nuclear Physics; National Science Foundation (NSF)

DOE Contract Number:: AC02-06CH11357

OSTI ID:: 1391968

Journal Information:: Physical Review. C, Nuclear Physics, Vol. 91, Issue 5; ISSN 0556-2813

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

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References (21)

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