Passage of fast charged particles through bent crystals and nanotubes

Abstract

The present work deals with the analysis of the different deflection mechanisms of high-energy charged particles by bent atomic strings. Conditions for realization of deflection and splitting effects for a high-energy charged particle beam in a bent crystal due to donut scattering mechanism are considered. It is shown the possibility of charged particle beam deflection by a bent nanotube due to axial channeling mechanism. Conditions for realization of this effect are discussed. The influence of the particle charge sign, its magnitude and of the incoherent process by thermal oscillations of the strings atoms and by electrons of the target on the beam deflection efficiency are considered. Computer simulation results for relativistic charged particle beam passage through straight and bent crystals and bent nanotubes are presented.