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Pairing and Isospin Symmetry in Proton-Rich Nuclei

J. Engel·K. Langanke·P. Vogel
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Abstract

Unlike their lighter counterparts, most odd-odd N=Z nuclei with mass A > 40 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 like-particle 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 shell-model calculations exhibit the same trends, despite the simultaneous presence of isoscalar pairs, deformation, and other correlations.

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J. Engel, K. Langanke, P. Vogel. 1996-10-01. Pairing and Isospin Symmetry in Proton-Rich Nuclei. https://doi.org/10.1016/s0370-2693(96)01294-4

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