Strength functions for charge-exchange nuclear excitations

The theory of finite Fermi-systems is applied to description of the multipole (S=0) and spin-multipole (S=1) charge-exchange nuclear excitations. The experimental data on the isobaric analog states (IAS) and Gamow-Teller resonances (GTR) recently obtained from the (p, n) studies are used to specify some characteristics of the charge- exchange effective interactions which are then employed to predict properties of the L=1,2,3 resonances. The influence of the one-pion- exchange potential on the S=1 resonances is studied. The value of the Landau-Migdal parameter g' is deduced by comparing the calculated energies of the GTR with the experimental ones. The dependence of the strength functions of the momentum transfer is also studied. The results of the macroscopic calculations for isobaric pair /sup 208/Pb- /sup 208/Bi are discussed. (7 refs).