Abstract

A new scheme of the electrostatic electron cyclotron resonance maser with slotted coaxial waveguide is presented here. Having studied it both in the linear and non linear regimes, we found that the radiation frequency and the converting efficiency could be increased largely for the low-energy electron beam in this scheme. The maximum converting efficiency of electrons with the π azimuthal mode can reach 23%. It has been revealed that there exist azimuthal and radical electron benching phenomena, corresponding to the kinetic and potential energy converting processes of electrons with the RF field. This revelation is helpful when looking into the physics of the electrostatic electron cyclotron resonance masers and other kinds of microwave devices with an electrostatic centrifugal field

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