Effect of dielectric electrization on two motion of charging electron flux

Effects of dielectric material electrization (monocrystals of lithium fluoride and alumophosphate glasses) on motion of an electron charging flux are investigated. Irradiation of samples is carried out in an electron flux with the energy of 50 keV. The pattern of luminescence in regions of a dielectric material, in which electrons penetrate, is visually observed and photographed. The effect of limiting the electron injection into a high-ohmic dielectric material is discovered experimentally as well as the formation of a current tube including the charged region. The conditions, under which the effect becomes apparent, depending on the electron flux energy, electrization geometry, and electrophysical properties of the material are determined quantitatively. It is necessary to take into account the effect observed, when investigating the effects of the electron flux with medium energies on high-ohmic dielectric materials