Properties of charge-exchange giant spin-dipole resonances in medium-heavy closed-shell parent nuclei: A semimicroscopic description

The semimicroscopic particle-hole dispersive optical model is adapted for a description of the main properties of charge-exchange giant spin-multipole resonances in medium-heavy closed-shell parent nuclei. The adapted model is implemented to evaluate the strength functions, transition densities, and branching ratios of direct one-nucleon decay for charge-exchange giant spin-dipole resonances in the ⁴⁸Ca, ⁹⁰Zr, ¹³²Sn, and ²⁰⁸Pb parent nuclei. Some of the calculation results are compared with available experimental data.