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Deformation Dependence of Gamow-Teller Strength in Waiting-Point Nuclei

Combines relativistic mean-field predictions of quadrupole deformation (beta2) with proton-neutron QRPA to show that Gamow-Teller strength distributions and beta-decay half-lives of neutron-deficient A~70 waiting-point nuclei depend strongly on nuclear shape, with density-dependent DD-ME2 deformations best reproducing measured half-lives relevant to the astrophysical rp-process.

Data Text

2501.00387

This paper re-examines the nuclear structure and beta-decay of neutron-deficient waiting-point nuclei near mass number A~70 (isotopes of Se, Br, Kr, Rb and Sr close to the N=Z line). Energy levels an…