同轴虚阴极的粒子模拟

摘要

A 2(1)/(2) dimension particle-in-cell(PIC) code is used to simulate a coaxial virtual cathode (vircator). By changing the geometrical and electrical parameters of the device, a series of regular knowledge has been achieved .Simulation results show that the output power of microwave is enhanced and the phenomenon of multiple frequencies is also suppressed by adding an electron collector.%采用2(1)/(2)维全电磁模相对论PIC粒子模拟程序对同轴虚阴极振荡器进行了数值模拟。通过改变装置的结构参数和电气参数等方法，对该类装置取得了一系列规律性的认识。通过模拟还发现，对要求的频段，通过加入电子收集极的方法，可以有效地提高功率和压制倍频现象的发生。