Strength fragmentation of Gamow-Teller transitions and delayed neutron emission of atomic nuclei

Abstract

Starting from a Skyrme interaction with tensor terms, the $\beta$-decay rates of ${}^{52}$Ca have been studied within a microscopic model including the $2p-2h$ configuration effects. We observe a redistribution of the strength of Gamow-Teller transitions due to the $2p-2h$ fragmentation. Taking into account this effect results in a satisfactory description of the neutron emission probability of the $\beta$-decay in ${}^{52}$Ca.

arXiv comment4 pages, accepted for publication in Physics of Particles and Nuclei

References in corpus (5)

• The tensor part of the Skyrme energy density functional. I. Spherical nuclei
• Beta decay of r-process waiting-point nuclei in a self-consistent approach
• The beta-delayed neutron emission in 78Ni region
• Effects of phonon-phonon coupling on low-lying states in neutron-rich Sn isotopes
• Influence of 2p-2h configurations on beta-decay rates

Cited by in corpus (1)

• Two-phonon structures for beta-decay theory