用变粒子数PARMELA程序作热场发射微波枪数值模拟计算

SIMULATIONS FOR THERMIONIC FIELD EMISSION MICROWAVE GUNS USING PARMELA PROGRAM WITH VARIABLE PARTICLE NUMBER

本文按Schottky方程给出热场发射微波枪阴极电流之值来确定PARMELA程序在每一时间步长内输入粒子数,使PARMELA程序能用来作热场发射微波枪电子的动力学计算,改善了把PARMELA程序不加修改直接用于热场发射微波枪计算而带来的不合理图象。

The input number of particles at every time step in PARMELA program is determined by the cathode's current of thermionic field emission according to Schottky equation in this paper. The PARMELA program with variable particle number can be used for the dynamical calculation of thermionic field emission microwave guns to improve unreasonable figures resulted from the direct use of PARMELA program without any revision.