Pairing and isospin symmetry in proton-rich nuclei
نویسنده
چکیده
Unlike their lighter counterparts, most odd-odd N = Z nuclei with mass A > 40 have ground states with isospin T=1, suggesting an increased role for the isovector pairing interaction. A simple SO(5) seniority-like model of this interaction reveals a striking and heretofore unnoticed interplay between likeparticle and neutron-proton isovector pairing near N = Z that is reflected in the number of each kind of pair as a function of A and T . Large scale shellmodel calculations exhibit the same trends, despite the simultaneous presence of isoscalar pairs, deformation, and other correlations. 21.10-k,21.60.Fw,21.60.Ka Typeset using REVTEX
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تاریخ انتشار 1996