Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2006-10-16
Phys.Rev. C74 (2006) 054308
Physics
Nuclear Physics
Nuclear Theory
15 pages, 5 figures. To appear in Phys Rev C
Scientific paper
10.1103/PhysRevC.74.054308
The energy distributions of the Gamow-Teller 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 BCS approximation. The Gamow-Teller transitions are obtained within a quasiparticle random phase approximation (QRPA) approach using a residual spin-isospin interaction in the particle-hole and particle-particle 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 are an essential information for studies of charge-exchange reactions and double-beta processes involving these isotopes.
Alvarez-Rodriguez R.
de Guerra Moya E.
Moreno Oscar
Sarriguren P.
Udias J. M.
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