Triaxiality, chirality and gamma-softness
Abstract
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 <gamma>=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.
Cite
@article{arxiv.nucl-th/0504071,
title = {Triaxiality, chirality and gamma-softness},
author = {K. Starosta and M. A. Caprio and T. Koike and R. Kruecken and C. Vaman},
journal= {arXiv preprint arXiv:nucl-th/0504071},
year = {2009}
}
Comments
6 pages, 5 figures, Proceedings of the 21st Winter Workshop on Nuclear Dynamics, Breckenridge, Colorado, February 5-12, 2005