陡化前沿Marx发生器的阻抗特性  

Impedance characteristic of wave erection Marx generator

作　　者：高景明[1] 刘永贵[1] 荀涛[1] 刘金亮[1] 杨建华[1] 

机构地区：[1]国防科学技术大学光电科学与工程学院,长沙410073

出　　处：《强激光与粒子束》2008年第12期2105-2108,共4页High Power Laser and Particle Beams

基　　金：国家高技术发展计划项目

摘　　要：利用50 kV无感电容器与固体电阻制作了10级陡化前沿Marx发生器,实现了电容储能型脉冲功率调制系统的小型化。使用不同阻值的水电阻负载研究了发生器的阻抗特性,并进一步制作了金属膜电阻负载进行实验,测定90Ω负载可以使发生器处于临界阻尼放电状态,从而确定发生器的内部阻抗约为45Ω。当充电电压为40 kV时,在金属膜电阻负载上得到了幅值约为210 kV,脉宽约为40 ns,前沿约为5 ns的快前沿高压脉冲。利用此发生器成功地驱动了强流二极管,当二极管阴阳极间距为15 mm时,在30 kV充电情况下,其输出电压约为154 kV,束流约为1 kA。A 10-stage wave erection Marx generator is designed and set up by using 50 kV non-inductive capacitors and solid resistors, which realizes the miniaturization of pulse power modulator with capacitance energy storage. The impedance characteristic of the generator is experimentally studied by utilizing water resistor loads with different resistance, and further estimated to be about 45 Ω by utilizing a metal film resistor load of 90Ω which makes the discharging circuit critically damped. For 40 kV charge, an output high voltage pulse with amplitude of about 210 kV, full width half maximum （FWHM） of about 40 ns, and rise time of 5 ns is obtained on the metal film resistor load. This voltage pulse generator is applied to drive a field-emission diode successfully. For a cathode-anode gap of 15 mm with 30 kV charged, the diode output voltage is about 154 kV, and the electron beam current is 1 kA.

关 键 词：脉冲功率源 陡化前沿 MARX发生器 阻抗特性 强流二极管 

分 类 号：TM833[电气工程—高电压与绝缘技术]