Spectroscopic properties of neutron rich nuclei beyond 132Sn and seniority mixing

Abstract

Within the shell model, our calculations have been focused on the study of the spectroscopic properties of the even-even tin isotopes around 132Sn. In particular the calculations of the low-lying states 0+, 2+, 4+, 6+ energies, and differents electromagnetic transitions B(E2, J + 2 → J) have been carried out. Two important points are discussed: the effect of the core excitations on the structure and transition rates in this region, and the possible closure of the sub-shell at N=90.