Triaxiality, chirality and gamma-softness

Details Triaxiality, chirality and gamma-softness Triaxiality, chirality and gamma-softness

2005-04-25

arxiv.org/abs/nucl-th/0504071v1

Acta Phys.Hung. A25 (2006) 181-186

Physics

Nuclear Physics

Nuclear Theory

6 pages, 5 figures, Proceedings of the 21st Winter Workshop on Nuclear Dynamics, Breckenridge, Colorado, February 5-12, 2005

Scientific paper

10.1556/APH.25.2006.2-4.5

Current work explores the impact of gamma-softness on partner bands built on the h11/2h11/2 proton-particle-neutron-hole configurations in triaxial odd-odd nuclei. The results of calculations conducted using a core-particle-hole coupling are presented. The model Hamiltonian includes the collective core, the single-particle valence nucleons, and separable quadrupole-quadrupole interactions. The Kerman-Klein method was applied to find eigenstates, which provided a convenient way for exploring core effects. Calculations were made for triaxial cores with various gamma-softness using the General Collective Model keeping the expectation value for the triaxiality parameter fixed at =30 deg. The degeneracy in the proton-neutron h11/2h11/2 bands results from the calculations for the gamma-rigid core but is lifted for the gamma-unstable core.

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