Abstract

Abstract The theory of ionization of atomic particles channeled by an interplanar crystal potential is developed. Taking account of nuclei thermal vibrations the effect of the diminution of electron loss probability of an ion by elastic interaction with the lattice atoms during channeling as well as in a crystal with random orientation is investigated. The anomalous dependence is predicted of the ionization probability on the angle between the direction of ion momentum and crystal axes (planes). It is shown that, unlike the ionization of fast atomic particles in an amorphous substance, this process in the crystal can proceed owing to inelastic interaction with the electron subsystem of the crystal.

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