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Spin-isospin excitations and beta+/EC half-lives of medium-mass deformed nuclei

P. Sarriguren·E. Moya de Guerra·A. Escuderos
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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.

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P. Sarriguren, E. Moya de Guerra, A. Escuderos. 2001-09-11. Spin-isospin excitations and beta+/EC half-lives of medium-mass deformed nuclei. https://doi.org/10.1016/s0375-9474(01)00565-6

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