期刊
PHYSICS LETTERS B
卷 634, 期 2-3, 页码 195-199出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2006.01.033
关键词
shell model; angular momentum projection; triaxial deformation; signature inversion
A possible scheme of realizing shell model calculations for heavy nuclei is based on a deformed basis and the projection technique. Here we present a new development for odd-odd nuclei, in which one starts with triaxially-deformed multi-quasi-particle configurations, builds the shell-model space through exact three-dimensional angular-momentum-projection, and diagonalizes a two-body Hamiltonian in this space. The model enables us to study the old problem of signature inversion from a different view. With an excellent reproduction of the experimental data in the mass-130 region, the results tend to interpret the phenomenon as a manifestation of dynamical drift of the rotational axis with presence of axial asymmetry in these nuclei. (c) 2006 Elsevier B.V. All rights reserved.
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