[en] For finding various bare characteristics of single-particle motion and of single-particle basis in magic nuclei, a method is described in which mixing with photons is separated from phenomenological single-particle characteristics. Generalizing the mass operator localization procedure, relations between bare and phenomenological characteristics are obtained. Radial dependence of these characteristics in finite nuclei is studied, as well as the quasiparticle-phonon interaction effect on the phenomenological characteristics. Calculations are carried out for neutrons in ²⁰⁸Pb