[paper] Isoscalar Spin Matrix Elements in s–d Shell Nuclei

Isoscalar Spin Matrix Elements in s–d Shell Nuclei by Akito Arima and Wolfgang Bentz doi: 10.7566/JPSCP.23.012011 The quenching of isovector spin matrix elements in s–d shell nuclei is well established experimentally as well as theoretically [1,2,3]. The isoscalar spin gyromagnetic ratios gsIS of nuclei with one nucleon or hole outside of LS closed shells are… Read More [paper] Isoscalar Spin Matrix Elements in s–d Shell Nuclei

Isoscalar and isovector spin response in sd-shell nuclei

The spin magnetic-dipole transitions and the neutron-proton spin-spin correlations in sd-shell even-even nuclei with N=Z are investigated by using shell-model wave functions taking into account enhanced isoscalar (IS) spin-triplet pairing as well as the effective spin operators. It was shown that the IS pairing and the effective spin operators gives a large quenching effect on… Read More Isoscalar and isovector spin response in sd-shell nuclei