Effects of the quasiparticle-phonon interaction in magic and non-magic nuclei

The results of the recent (40)Ca and (58)Ni(alpha, alpha') experiments at E(alpha) = 240 MeV are analyzed within a consistent microscopic model which takes into account both the effective particle-hole interaction and the quasiparticle-phonon one. A good agreement with the experiment for the isoscalar EO EWSR was obtained for (40)Ca. But due to using microscopic transition densities instead of phenomenological ones for (58)Ni we obtained 71% of the EWSR instead of the noticeably less experimental value. Therefore, a part of the EO strength may be hidden in the experimental background in the (58)Ni experiments. An equation for the nuclear gap in non-magic nuclei which takes into account both a particle-particle interaction and the quasiparticle-phonon one has been obtained. The first results of its solution have been represented.