2010•Science Technology and EngineeringRequires access

The Dispersion Relation of Rectilinear Relativistic Electron Beam-slow Wave Interaction System

FU Cheng-zhi

Abstract

The dispersion relation of relativistic rectilinear electron beam and slow-wave system is investigated by cold fluid model within the small signal limit.Instability occurs when the electron velocity exceeds the wave phase velocity.The dispersion equation,growth rate and spatial growth rate are studied analytically.The distinctive interaction mechanism is promising for the design of a new kind of compact high-power microwave generation devices.

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Key concepts: Dispersion relation, Relativistic electron beam, Physics, Dispersion (optics), Instability, Electron, Phase velocity, Beam (structure)