Abstract

The paper presents the results of the study of the influence of plasma effects on the processes occurring in high-power electronic systems. The results are obtained using electromagnetic PIC code for a promising class of high-power microwave devices - relativistic vircators (generators and amplifiers with a virtual cathode). A detailed study of the behavior of critical current of a relativistic electron beam with a change of the control parameters of the system (concentration of residual gases, external magnetic field parameters, energy of electron beam and shape of current pulse) is carried out. The results obtained within the framework of the research are intended to broaden the fundamental concepts about the dynamics of intense electron beams in a plasma.

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