Spin-isospin excitations and beta(+)/EC half-lives of medium-mass deformed nuclei
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 quasipa...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2001 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/31854 |
| Acceso en línea: | http://hdl.handle.net/10261/31854 |
| Access Level: | acceso abierto |
| Palabra clave: | Deformed selfconsistent HF-QRPA Gamow-Teller strength |
| Sumario: | 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 Ml strength distributions. |
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