The impact of the tensor interaction on the β-delayed neutron emission of the neutron-rich Ni isotopes

E.O Sushenok,A.P Severyukhin,I.N Borzov,N.N Arsenyev,A Verkheev,I Bobrikov,A Friesen,A Aparin,V Chudoba

doi:10.1051/epjconf/201817709010

Abstract

The neutron emission of the β-decay of 74;76;78;80Ni are studied within the quasiparticle random phase approximation with the Skyrme interaction. The coupling between one- and two-phonon terms in the wave functions of the low-energy 1+ states of the daughter nuclei is taken into account. It is shown that the strength decrease of the neutronproton tensor interaction leads to the increase of the half-life and the neutron-emission probability.

Highlights

One of the successful tools for studying charge-exchange nuclear modes is the quasiparticle random phase approximation (QRPA) with the self-consistent mean-field derived from a Skyrme energydensity functional (EDF), see e.g., [6,7,8,9]
We investigate the impact of the tensor correlations on the probability of the neutron emission
As the parameter set in the particle-hole channel, we use the Skyrme EDFs TI J [14], which take into account the tensor terms

Summary

Introduction

One of the successful tools for studying charge-exchange nuclear modes is the quasiparticle random phase approximation (QRPA) with the self-consistent mean-field derived from a Skyrme energydensity functional (EDF), see e.g., [6,7,8,9]. As the parameter set in the particle-hole channel, we use the Skyrme EDFs TI J [14], which take into account the tensor terms. The starting point is the HF-BCS calculation of the ground state properties of the even-even parent nucleus (N,Z) within a spherical symmetry assumption.

Results

Conclusion