Alignments, shape changes, and band terminations in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">Tm</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>157</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span>

M. A. Riley; T. B. Brown; N. R. Johnson; Y. A. Akovali; C. Baktash; M. L. Halbert; D. C. Hensley; I. Y. Lee; F. K. McGowan; A. Virtanen; M. E. Whitley; J. Simpson; L. Chaturvedi; L. H. Courtney; V. P. Janzen; L. L. Riedinger; T. Bengtsson

doi:10.1103/PhysRevC.51.1234

Alignments, shape changes, and band terminations in ${}^{157}{Tm}$

M. A. Riley, T. B. Brown, N. R. Johnson, Y. A. Akovali, C. Baktash, M. L. Halbert, D. C. Hensley, I. Y. Lee, F. K. McGowan, A. Virtanen, M. E. Whitley, J. Simpson, L. Chaturvedi, L. H. Courtney, V. P. Janzen, L. L. Riedinger, and T. Bengtsson

Phys. Rev. C 51, 1234 – Published 1 March 1995

Abstract

A high-spin study has been performed on the transitional N=88 nucleus ${}^{157}{Tm}$ . Over 80 new transitions have been added to the level scheme and states up to spin 83/ $2^{-}$ observed. At low to medium spins the observed structures and their alignment behavior may be understood in terms of multiquasiparticle excitations within the standard cranked shell model. At higher spins a change from collective to noncollective rotation via the mechanism of band termination is established. Comparisons with cranked Nilsson-Strutinsky calculations including pairing are made. The ${}^{157}{Tm}$ results and their implications for neighboring even-even N=88 nuclei are discussed.

Received 29 July 1994

DOI:https://doi.org/10.1103/PhysRevC.51.1234

Authors & Affiliations

M. A. Riley

Department of Physics, Florida State University, Tallahassee, Florida 32306
Oak Ridge National Laboratory and Joint Institute for Heavy Ion Research, Oak Ridge, Tennessee 37831

T. B. Brown