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Gamow-Teller strength distributions in 76Ge and 76Se from deformed quasiparticle random-phase approximation

AuthorsSarriguren, Pedro ; Moya de Guerra, Elvira ; Pacearescu, L.; Faessler, Amand; Šimkovic, F.; Raduta, A. A.
Keywords[PACS] Relation with nuclear matrix elements and nuclear structure
[PACS] Nuclear Density Functional Theory and extensions (includes Hartree–Fock and random-phase approximations)
[PACS] Properties of specific nuclei listed by mass ranges: 59 ≤ A ≤ 89
Issue Date29-Apr-2003
PublisherAmerican Physical Society
CitationPhysical Review C 67(4): 044313 (2003)
AbstractWe study Gamow-Teller strength distributions of 76Ge and 76Se within a deformed quasiparticle random-phase approximation formalism, which includes residual spin-isospin forces in the particle-hole and particle-particle channels. We consider two different methods to construct the quasiparticle basis, a self-consistent approach based on a deformed Hartree-Fock calculation with density-dependent Skyrme forces and a more phenomenological approach based on a deformed Woods-Saxon potential. Both methods contain pairing correlations in the BCS approach. We discuss the sensitivity of Gamow-Teller strength distributions to the deformed mean field and residual interactions.
Description10 pages, 4 tables, 8 figures.-- PACS nrs.: 23.40.Hc; 21.60.Jz; 27.50.1e.-- ArXiv pre-print available at: http://arxiv.org/abs/nucl-th/0303053v1
Publisher version (URL)http://link.aps.org/doi/10.1103/PhysRevC.67.044313
Appears in Collections:(CFMAC-IEM) Artículos
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