In the present article, isolated electromagnetic waves of appreciable amplitude excited by intense electron beams in decelerating systems are investigated. The characteristics of the wave beam are estimated by means of a self-consistent kinetic analysis of the final equilibrium state which appears as a result of nonlinear interaction of the wave beam. It is shown that the particle field is concentrated practically within the cluster. Beam reorganization as a result of the effect of longitudinal autofocusing is considered.
Moscow State University, Leninskie Gory, Moscow, 119992, Russia
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