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Shape mixing and β-decay properties of neutron-deficient Kr and Sr isotopes

AuthorsSarriguren, Pedro
Keywords[PACS] Nuclear Density Functional Theory and extensions (includes Hartree-Fock and random-phase approximations)
[PACS] Relation with nuclear matrix elements and nuclear structure
[PACS] Properties of specific nuclei listed by mass ranges: 59 ≤ A ≤ 89
Issue Date22-Apr-2009
PublisherAmerican Physical Society
CitationPhysical Review C 79 (4): 044315 (2009)
AbstractGamow-Teller strength distributions and β-decay half-lives in neutron-deficient Kr and Sr isotopes are investigated within a deformed quasiparticle random phase approximation. The approach is based on a self-consistent Skyrme Hartree-Fock mean field with pairing correlations and residual separable particle-hole and particle-particle forces. A simple two-level model is used to mix the nuclear shapes into the physical ground state. Good agreement with experiment is found with shape mixing coefficients which are consistent with those obtained phenomenologically from mixing of rotational bands.
Description7 pages, 1 table, 6 figures.--PACS nrs.: 21.60.Jz, 23.40.Hc, 27.50.+e.--ArXiv pre-print available at: http://arxiv.org/abs/0903.5501v1
Publisher version (URL)http://link.aps.org/doi/10.1103/PhysRevC.79.044315
Appears in Collections:(CFMAC-IEM) Artículos
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