Investigation of Electron-Oscillator Flows Radiative Interaction in Multibeam Microwave Generator

Electrostatic focusing is promising for the implementation of powerful spatially developed radiation sources, including microwave generators. With its help, it is possible to replace bulky devices with pulsed solenoids. The task is to determine the parameters of the microwave multibeam generator flows of electronic oscillators, taking into account the influence of the space charge and radiation friction to increase the output power. Analysis of two-dimensional processes is difficult to carry out in the calculation of multipath generators using many ensembles of interacting oscillators. A significant simplification is achieved in the low-frequency approximation in the case of the introduction of equivalent synchronized oscillators with nonlinear negative losses and nonlinear dependence of frequency on amplitude. The parameters of the oscillators are known frequency dependency of the amplitude of the generation, and also according to characteristics of the process of establishment of oscillations in generating small volume, consider using ensembles of particles. First, the parameters for a single-beam generator are analyzed using machine calculation. Then, on the basis of equivalent generators, a model of a microwave generator is created by means of a nonlinear unsteady theory. And at the final stage, the radiation field of the generator is determined depending on the phase velocity of the excitation wave of dipoles, the parameters of the generator are studied, taking into account the radiation interaction. As a result, analyzed a method to study the induced radiation due to electrostatic focusing, improved models of non-linear oscillators, in which taken into account the forces of space charge. The influence of radiation interaction and oscillator synchronization is investigated.