Large-scale shell-model calculations near mass region 100-130

Abstract

In this work, we have presented a microscopic shell-model description of the structure and collective behavior of intermediate-mass nuclei around doubly magic ¹⁰⁰Sn and ¹³²Sn nuclei. The Sn-isotopes lie between the two doubly magic nuclei and cover a range from exotic proton-rich N=Z nuclei to exotic neutron-rich nuclei with N/Z > 1.6. The results obtained using BIGSTICK code for the low-level excitation states and transition probabilities for the studied Sn and Ba isotopic chains have been discussed in the radiance of available experimental data. We have used ¹⁰⁰Sn as a core for all the studied isotopes with the same valence space (i.e. 1d_5/2, 2s_1/2, 1d_3/2, 0g_7/2, 0h_11/2 or ‘sdgh’) for both protons (Z) and neutrons (N) between 50 and 82. These calculations are performed by means of globally optimized monopole effective interaction for the sdgh-shell.