Semimicroscopic description of the spreading widths of the isobaric-analog resonances in medium-weight spherical nuclei

The attempt of the quantitative description of the fragmentation width of the isobaric-analogous resonances (IAR) is made within the frames of the semimicroscopic approach, correlated by the isospin. The IAR relationship with the O+-configurations of the proton-neutron hole type is described on the basis of the random phase continuum approximation in the terms of the variable part of the nucleus average Coulomb field, whereas the relationship of the above-mentioned configurations with the multiquasiparticle ones is described in the terms of the imaginary part of the realistic optical potential for the protons. The results of the calculations, accomplished for the analogs of the basic states of the 208,209Pb parent nuclei without application of the adjustment parameters, are compared with the corresponding experimental data