Plasma high-current generator of wideband high-power microwaves with magnetic self-insulation

A plasma maser that does not use a strong magnetic field for transporting a relativistic highcurrent electron flow is calculated within the particle-in-cell model. Tuning of the average radiation frequency from 3 to 7GHz with a single pulse spectrum width of 2 to 3GHz is demonstrated. The power of a radiation pulse with a duration up to 70 ns is from 0.5 to 0.7GW at the efficiency of 4 to 6%. © 2017, Allerton Press, Inc.