Numerical Simulations of Nonlinear Dynamics of Electron Cyclotron Maser with a Straight Beam

An electron cyclotron maser based on anomalous Doppler effect (ADECM) with an initially axial beam velocity is considered, and the nonlinear equation of beam-wave interaction is presented. With the numerical methods, the nonlinear dynamics of the ADECM is investigated. It is shown that the saturated interaction efficiency of the ADECM approaches 90% and the interaction length for the saturated efficiency spans about 5–20 cm. The results may be of importance for designing a compact device in applications in microwave generations or microwave heating of ceramic laminates.