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Beta-decay properties of neutron-rich medium-mass nuclei

AutorSarriguren, Pedro
Fecha de publicación2016
EditorInstitute of Physics Publishing
CitaciónJournal of Physics: Conference Series 724: 012044 (2016)
Resumenβ-decay properties of even-even and odd-A neutron-rich Ge, Se, Kr, Sr, Zr, Mo, Ru, and Pd isotopes involved in the astrophysical rapid neutron capture process are studied within a microscopic proton-neutron quasiparticle random-phase approximation. The underlying mean field is based on a self-consistent Skyrme Hartree-Fock + BCS calculation that includes deformation as a key ingredient. The isotopic evolution of the various nuclear equilibrium shapes and the corresponding charge radii are investigated in all the isotopic chains. The energy distributions of the Gamow-Teller strength, as well as the β-decay half-lives are discussed and compared with the available experimental information. It is shown that nuclear deformation plays a significant role in the description of the decay properties in this mass region. Reliable predictions of the strength distributions are essential to evaluate decay rates in astrophysical scenarios.
Descripción7 págs.; 7 figs.; 1 tab. ; Open Access funded by Creative Commons Atribution Licence 3.0
Versión del editorhttps://doi.org/10.1088/1742-6596/724/1/012044
Identificadoresdoi: 10.1088/1742-6596/724/1/012044
issn: 1742-6588
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