DIFFUSION-MODEL OF DECHANNELING BASED ON THE BOLTZMANN-EQUATION - 3 REGIMES OF ENERGETIC PARTICLE MOTION IN CRYSTALS

The generalized local Boltzmann equation is derived for the distributi on function of energetic particles interacting with the thermal vibrat ions of the lattice. On using the Boltzmann collision term the particl e energy losses A(epsilon(perpendicular to)) and the diffusion functio n B(epsilon(perpendicular to)) are obtained. The functions A(epsilon(p erpendicular to)) and B(epsilon(perpendicular to)) have singularities (fracture, peak) connected with the difference of the contributions of tile particles moving in the regimes of channeling, quasichanneling, and random motion.