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Gamow-Teller strength distributions in Xe isotopes

AutorMoreno, Óscar; Álvarez-Rodríguez, Raquel ; Sarriguren, Pedro ; Moya de Guerra, Elvira ; Udías, J. M.; Rodríguez Vignote, Javier
Palabras clave[PACS] Nuclear Density Functional Theory and extensions (includes Hartree–Fock and random-phase approximations)
[PACS] β decay; double β decay; electron and muon capture
[PACS] Other resonances
[PACS] Properties of specific nuclei listed by mass ranges: 90 ≤ A ≤ 149
Fecha de publicación16-nov-2006
EditorAmerican Physical Society
CitaciónPhysical Review C 74(5): 054308 (2006)
ResumenThe energy distributions of the Gamow-Teller (GT) strength are studied for even-even Xe isotopes with mass numbers from 124 to 142. A self-consistent microscopic formalism is used to generate the single-particle basis, using a deformed Skyrme Hartree-Fock mean field with pairing correlations in the BCS approximation. The GT transitions are obtained within a quasiparticle random phase approximation approach using a residual spin-isospin interaction in the particle-hole (ph) and particle-particle (pp) channels. We then discuss the pairing BCS treatment and the determination of the ph and pp residual interaction coupling constants. We study the GT+ and GT− strength distributions for the equilibrium nuclear shapes, which comprise essential information for studies of charge-exchange reactions and double-β processes involving these isotopes.
Descripción9 pages, 4 tables, 4 figures.-- PACS nrs.: 21.60.Jz; 23.40.-s; 24.30.Gd; 27.60.+j.-- ArXiv pre-print available at: http://arxiv.org/abs/nucl-th/0610064v1
Versión del editorhttp://dx.doi.org/10.1103/PhysRevC.74.054308
ISSN0556-2813 (Print)
1089-490X (Online)
1538-4497 (CD-ROM)
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