Isoscalar g-factors of odd-odd N = Z nuclei

Abstract

It is known that the measured and calculated g-factors of 2 1+ states in even-even N=Z nuclei have values g≅0.5. Both the collective model and the LS limit of the shell model (with L=2, S=0) can explain this. Here we note that the isoscalar g-factors of low-lying 1 +, 3+, and 5+ T=0 states in medium-mass odd-odd N=Z nuclei have also been measured to have values close to 0.5. An up-to-date compilation of the experimental values is presented. Also included are the results of large-scale shell model calculations which agree very well with the experimental data. We show that the isoscalar g-factors in N=Z nuclei also approach 0.5 in the large-l limit for a single-j shell model. © Europhysics Letters Association.