摘要
将10级陡化前沿Marx发生器由电阻隔离型改造成为电感隔离型,以便对其开展重频特性研究。通过恒压源充电的单次实验发现,发生器在氮气(N2)中工作时,两种隔离方式的输出脉冲波形基本一致,然而在六氟化硫(SF6)气体中工作时,电感隔离型相对于电阻隔离型的输出脉冲前沿较慢;对其原因做出了初步分析。在利用恒流充电装置充电的重频实验过程中,通过采用提高充电电流的方法,解决了发生器恒流充电时的充电脉动问题,进而开展了重复频率运行实验研究。实验结果表明,在不对开关进行吹气的情况下,当充电30 kV时,发生器可以在8.2 Hz的重频下稳定工作,输出脉冲的重叠一致性比较好,输出电压约为150 kV,电流约为1.8 kA,脉冲前沿为十几ns。
A 10-stage wave erection Marx generator was modified from resistively isolated configuration to inductively isolated configuration for the investigation on its repetitive operation characteristics. Through a single shot experiment powered by a constant voltage charging device, it is found that when discharging in N2, the generator has the same output waveforms for both isolation configurations; but when discharging in SF6, it has a faster rise time for the resistively isolated configuration than that for the inductively isolated configuration, and the reason for this phenomenon was analyzed preliminarily. By enhancing the charging current, the pulsant problem for repetitive charging with constant current charging device was solved, and then, repetitive operation experiments were carried out. The experimental results show that with a 30 kV charging voltage, the wave erection Marx generator can operate stably at 8.2 Hz repetition rate without blowing off the internal spark gaps, producing an output pulse of 150 kV, 1.8 kA and rise time less than 20 ns.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2009年第1期157-160,共4页
High Power Laser and Particle Beams
基金
国家高技术发展计划项目
