Principles of invariant embedding in the problem of self-sputtering of solids

Principles of invariant embedding are applied to investigation into the phenomenon of self-sputtering of solids. Integral equations describing the flux of the sputtered atoms with regard for the boundary conditions are obtained. Approximate solutions to the integral equation for a function that describes the energy and angular spectra of the atoms escaping from the material surface in the case of self-sputtering are found.