Kel'nyk O. TRANSITION RADIATION UNDER THE BEAM-PLASMA SPACE EXPERIMENTS' CONDITIONS.

Transition radiation a a mechanism of electromagnetic waves excitation under the conditions of the space beam-plasma experiments. Methods - analytical methods of theoretical physics, numerical simulations. The concept of the transversal length of the transition radiation formation zone (TRFZ) was generalized for the case of plasma in the arbitrary constant magnetic field. The whistler mode transition radiation was calculated for the cases of small and large transversal sizes of TRFZ (comparatively to inhomogeneity transversal size). Such radiation is efficient enough for the registration possibility. Same calculations was performed for the transition radiation in the periodically inhomogeneous plasma. Features of the elec-tron beam fronts' transition radiation was studied, including the spatial selection effect. The field of application is physics of space plasmas.