V. I. Kurilko

Conversion of the energy of a high-current REB into electromagnetic wave energy

Results are presented from a theoretical investigation and quantitative analysis of the physical processes that govern the efficiency of a coaxial device aimed at converting the energy of a relativistic electron beam into the energy of a TEM wave (a wave in a circular cylindrical coaxial waveguide). The key diffractional problem is solved exactly using a simplified theoretical model, which makes it possible to understand the mechanisms for the formation of a TEM wave and determine how the beam parameters and the design parameters of the converter affect the relative fractions of the kinetic energy of a relativistic electron beam and the energy of its own magnetic and electric fields that are transferred into the energy of the TEM wave field. The results obtained are analyzed quantitatively, and prospects for further theoretical and experimental research in this area are outlined.

NONLINEAR THEORY FOR THE EXCITATION OF REGULAR OSCILLATIONS BY A RELATIVISTIC ELECTRON BEAM

In this paper we will examine theoretically the dynamics of the development of the two-stream instability in the interaction of an unmodulated relativistic beam with such a cavity. Our goal is to determine the maximum amplitude of the excited field, with an account of the opposition of this field to the motion of the beam particles, and to determine the energy distribution of the beam at the cavity exit. This distribution is interesting, in particular, for the development of the self-acceleratio n of an electron beam proposed in