Heavy Deformed Nuclei in the Shell Model Monte Carlo Method

Y. Alhassid, L. Fang, and H. Nakada
Phys. Rev. Lett. 101, 082501 – Published 19 August 2008

Abstract

We extend the shell model Monte Carlo approach to heavy deformed nuclei using a new proton-neutron formalism. The low excitation energies of such nuclei necessitate low-temperature calculations, for which a stabilization method is implemented in the canonical ensemble. We apply the method to study a well-deformed rare-earth nucleus, Dy162. The single-particle model space includes the 50–82 shell plus 1f7/2 orbital for protons and the 82–126 shell plus 0h11/2, 1g9/2 orbitals for neutrons. We show that the spherical shell model reproduces well the rotational character of Dy162 within this model space. We also calculate the level density of Dy162 and find it to be in excellent agreement with the experimental level density, which we extract from several experiments.

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  • Received 10 October 2007

DOI:https://doi.org/10.1103/PhysRevLett.101.082501

©2008 American Physical Society

Authors & Affiliations

Y. Alhassid1, L. Fang1, and H. Nakada2

  • 1Center for Theoretical Physics, Sloane Physics Laboratory, Yale University, New Haven, Connecticut 06520, USA
  • 2Department of Physics, Graduate School of Science, Chiba University, Inage, Chiba 263-8522, Japan

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Issue

Vol. 101, Iss. 8 — 22 August 2008

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