Spin-isospin excitations and beta+/EC half-lives of medium-mass deformed nuclei
Nuclear Theory
2009-11-07 v1
Abstract
A selfconsistent approach based on a deformed HF+BCS+QRPA method with density-dependent Skyrme forces is used to describe beta+ decay properties in even-even deformed proton rich nuclei. Residual spin-isospin forces are included in the particle-hole and particle-particle channels. The quasiparticle basis contains neutron-neutron and proton-proton pairing correlations in the BCS approach, while neutron-proton pairing interaction is treated as a residual force in QRPA. We discuss the sensitivity of Gamow-Teller strength distributions and beta+/EC half-lives to deformation, pairing and the strength of the particle-particle interaction. The dependence on deformation is also compared to that of spin M1 strength distributions.
Keywords
Cite
@article{arxiv.nucl-th/0109028,
title = {Spin-isospin excitations and beta+/EC half-lives of medium-mass deformed nuclei},
author = {P. Sarriguren and E. Moya de Guerra and A. Escuderos},
journal= {arXiv preprint arXiv:nucl-th/0109028},
year = {2009}
}
Comments
16 pages, 5 figures