正交场间隙中电子束动力学行为的研究  

STUDY OF THE ELECTRON BEAMDYNAMICAL BEHAVIOR IN CROSS FIELD GAP

作　　者：胡红庆[1] 杨中海[1] 

机构地区：[1]电子科技大学高能电子学研究所

出　　处：《强激光与粒子束》1998年第1期150-154,共5页High Power Laser and Particle Beams

基　　金：国家863激光技术领域及国家自然科学基金

摘　　要：用一维粒子模拟的方法对正交场平板二极管间隙中电子束的动力学行为进行了研究，模拟结果表明：注入电流存在着一个临界值，当注入电流超过这个临界值时，电子束的行为将由层流态变化到扰动态。当考虑相对论效应时，这种由层流态到扰动态的中间过程较为明显，且电流临界值突然下降。In this paper the dynamical behavior of the electron beam in the cross field planar diode is investigated by means of the one dimensional particle in cell simulation.The results of simulation indicate that the injected current have a critical value.The electron beam will transit to the turbulent behavior from the laminar behavior when the injected current exceed the critical current.When we consider the relativisitcal effect,this transition to turbulence is very evident,and the value of the critical current suddenly decrease,and dont,this transition to turbulence is very evident,and the value of the critical current suddenly decrease,and it dont simplely increase with the external voltage and magnetic fields increasing.

关 键 词：正交场间隙 临界电流 粒子模拟 电子束动力学 

分 类 号：TN140.1[电子电信—物理电子学]