摘要
采用静电场模拟对二极管结构及导引磁场位形分布进行了优化设计,利用设计的二极管在高压脉冲发生器上进行了重复频率运行实验研究,给出了相应测试波形,并对不同材料阴极、不同真空度情况下二极管的发射特性进行了比较。在二极管真空度满足一定要求(p<0.01Pa)条件下以在重复频率方式运行时,不论是石墨阴极还是金属阴极,输出电子束流都比较稳定。设计的二极管电子束电压超过500kV,电流约5kA,脉冲宽度40ns,重复频率100Hz。
Based on the static electric-field simulation, the structures of diode and insulator, as well as the position and shape of guiding magnetic-field are designed and optimized. Then the experiments of repetition rate and intense current electron-beam diode are carried out on high voltage generator, and the experimental waveforms are brought forth. The compares of the cathode emission character at different vacuum and different cathode materials are presented. The output electron-beam current of graphite and metal cathode are both stable with repetition rate at the candition of p< 0.0l Pa. The designed diode can deliver intense electron-beam pulse of 500 kV/5 kA, pulse width 40 ns, repetition rate 100 Hz.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2004年第11期1437-1440,共4页
High Power Laser and Particle Beams
基金
国家863计划项目资助课题
中国工程物理研究院基金资助课题(20020430)
关键词
二极管
重复频率
强流电子束
磁场设计
Electric fields
Magnetic fields
Operations research
Structural design
Structural optimization
