Self-consistent description of dipole states with accounting the one-particle continuum

A self-consistent translationally invariant model with separable effective interactions is used to describe dipole excitations in spherical nuclei. The equations for the effective field are solved in the coordinate representation with an exact account of the one-particle continuum. This enables one to obtain the escape widths for the excitations with energies higher than the nucleon emission threshold. The energies, the magnitudes of B(E1), strength functions, escape widths, and the transition densities of the dipole states are calculated for a number of light and heavy nuclei