Quantum and classical effects in scattering of relativistic electrons by crystal atomic string

The results of investigation of the relativistic electron scattering by a crystal atomic string at a small incident angle to its axis are presented. The possibility of the particle rainbow scattering and orbiting in this case is shown. It is shown that the Ramsauer-Townsend-type effect of the total cross-section decrease for elastic scattering of relativistic electrons by a crystal atomic string can take place at small values of particle incidence angles

About the probability of close collisions during stochastic deflection of positively charged particles by a bent crystal

AbstractThe probability of close interactions of high-energy positively charged particle with atoms in a bent crystal was considered as a function of the angle between the initial particle momentum and the bending plane. The results of simulation of particle motion presented in the article show the great efficiency of high-energy positively charged particle deflection by a bent crystal due to the stochastic deflection mechanism and strong reduction of the probability of close collisions during the stochastic deflection in comparison to the planar channeling in a bent crystal