Shell-model studies on exotic nuclei around Sn-132

摘要

The study of exotic nuclei around Sn-132 is a subject of current experimental and theoretical interest. Experimental information for nuclei in the vicinity of Sn-132, which have been long inaccessible to spectroscopic studies, is now available thanks to new advanced facilities and techniques. Some new data on these neutron-rich nuclei may suggest a modification in the shell structure. They are, in fact, somewhat different from what one might expect by extrapolating the existing results for N < 82, and as a possible explanation a change in the single-proton level scheme has been suggested. This is stimulating shell-model studies in this region. Here, we discuss results of recent shell-model studies of Sn-132 neighbors, focusing attention on calculations employing realistic effective interactions.