REALISTIC SHELL-MODEL CALCULATIONS FOR EXOTIC NUCLEI AROUND CLOSED SHELLS

摘要

We report on a study of neutron-rich nuclei around doubly magic ~(132)Sn in terms of the shell model employing a realistic effective interaction derived from the CD-Bonn nucleon-nucleon potential. The short-range repulsion of the bare potential is renormalized by constructing a low-momentum potentiaLV_(low-k), that is used directly as input for the calculation of the effective interaction. We present results for the four nuclei beyond the N = 82 shell closure ~(134) Sn, ~(134) Sb, ~(136) Sb, and ~(136)Te. Comparison shows that our results are in very good agreement with the experimental data presently available for these exotic nuclei. We also present our predictions of the hitherto unknown spectrum of ~(136) Sn.