Phys.Rev. C 104, 014309 (2021)

K.Yoshida

Isovector spin susceptibility: Isotopic evolution of collectivity in spin response

NUCLEAR STRUCTURE ^{42,44,46,48,50,52,54,56,58,60,62,64,66,68,70}Ca, ^{52,54,56,58,60,62,64,66,68,70,72,74,76,78}Ni; calculated distributions of the isovector (IV) spin-flip magnetic-dipole (M1), Gamow-Teller (GT) transition strengths in the neutral channel as functions of the excitation energy, moments of the transition strengths, SGII functional, SkP functional, isovector-spin susceptibility; deduced that repulsive character of the residual interaction in the spin-isospin channel diminishes the susceptibility, whereas the isoscalar (IS) proton-neutron pairing appearing in the charge exchange channel opposes the suppression. Nuclear energy-density functional (EDF) approach for calculating the response functions based on Skyrme-Kohn-Sham-Bogoliubov method and the like-particle quasiparticle-random-phase approximation (QRPA) and the proton-neutron QRPA.

doi: 10.1103/PhysRevC.104.014309