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Gamow-Teller strength distributions in Xe isotopes

O. Moreno·R. Alvarez-Rodriguez·P. Sarriguren·E. Moya de Guerra·J. M. Udias·J. R. Vignote
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Abstract

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.

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O. Moreno, R. Alvarez-Rodriguez, P. Sarriguren, E. Moya de Guerra, J. M. Udias, J. R. Vignote. 2006-10-16. Gamow-Teller strength distributions in Xe isotopes. https://doi.org/10.1103/physrevc.74.054308

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