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

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

2009-03-31

arxiv.org/abs/0903.5501v1

Phys.Rev.C79:044315,2009

Physics

Nuclear Physics

Nuclear Theory

14 pages, 6 figures. To be published in Phys. Rev. C

Scientific paper

10.1103/PhysRevC.79.044315

Gamow-Teller strength distributions and beta-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 selfconsistent 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.

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