Energy levels in131Pr
- 1 September 1987
- journal article
- Published by IOP Publishing in Journal of Physics G: Nuclear Physics
- Vol. 13 (9) , 1165-1172
- https://doi.org/10.1088/0305-4616/13/9/016
Abstract
Excited states in the odd-proton nucleus 131Pr have been investigated to high spin using gamma -ray spectroscopy, finding 17 new energy levels. A negative-parity yrast band, based on the Ipi =(11-/2) state, is seen up to spin Ipi =(47-/2), revealing a band crossing at h(cross) omega approximately=0.4 MeV. A positive-parity sideband, with no backbend, is also found. The results are discussed in terms of the cranked shell model, assuming an axially symmetric prolate shape with epsilon 2=0.25, and compared with other N=72 isotones.Keywords
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