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Published August 19, 1996 | public
Journal Article Open

Shell model Monte Carlo studies of γ-soft nuclei


We present shell model Monte Carlo calculations for nuclei in the full major shell 50–82 for both protons and neutrons. For the interaction we use a pairing plus quadrupole derived from a surface-peaked separable force. The methods are illustrated for 124Sn, 128Te, and 124Xe. We calculate shape distributions, moments of inertia, and pairing correlations as functions of temperature and angular velocity. Our calculations are the first microscopic evidence of γ-softness of nuclei in this region.

Additional Information

©1996 The American Physical Society. Received 10 August 1995. This work was supported in part by the U.S. Department of Energy, Contracts No. DE-FG-0291-ER-40608, No. DE-FG0690-ER40561, and No. DE-AC05-96OR22464, and by the National Science Foundation, Grants No. PHY90-13248 and No. PHY91-15574. Computational cycles were provided on the IBM SP2 at the Maui High Performance Computing Center. We acknowledge useful discussions with F. Iachello, H. Nakada, and A. Ansari. Y.A. acknowledges the hospitality of the Institute for Nuclear Theory at the University of Washington where part of this work was completed.


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