beta-decay in neutron-deficient Hg, Pb, and Po isotopes

Details beta-decay in neutron-deficient Hg, Pb, and Po isotopes beta-decay in neutron-deficient Hg, Pb, and Po isotopes

2006-04-11

arxiv.org/abs/nucl-th/0604024v1

Phys.Rev. C73 (2006) 054302

Physics

Nuclear Physics

Nuclear Theory

18 pages, 7 figures, to appear in Phys. Rev. C

Scientific paper

10.1103/PhysRevC.73.054302

The effect of nuclear deformation on the energy distributions of the Gamow-Teller strength is studied in neutron-deficient Hg, Pb, and Po even isotopes. The theoretical framework is based on a self-consistent deformed Skyrme Hartree-Fock mean field with pairing correlations between like nucleons in BCS approximation and residual spin-isospin interactions treated in the proton-neutron quasiparticle random phase approximation. After a systematic study of the Gamow-Teller strength distributions in the low excitation energy region, relevant for beta-decay, we have identified the best candidates to look for deformation signatures in their beta-decay patterns. beta+ half-lives and total Gamow-Teller strengths B(GT+) and B(GT-) are analyzed as well.

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