高电压技术2018，Vol.44Issue(6)：1961-1967,7.DOI:10.13336/j.1003-6520.hve.20180529031
真空电弧等离子中提取重频电子束的实验研究
Experimental Research of Repetition Frequency Electron Beam Extraction from Vacuum Arc Plasma
摘要
Abstract
To meet the requirements of long pulse and high repetition rate electron beam in high power microwave radiation source,we put forward a device which can produce repetition frequency electron beam from vacuum arc plasma at low values of dc arc current, and the device contains copper plate cathode and cylindrical hollow anode with stainless steel mesh on the bottom and outlet hole on the top. The extraction power supply is designed based on MOSFET controlled by DSP, extracting an electron beam from a hollow anode vacuum arc plasma cathode. At the same time, the self-excited circuit is adopted to solve the problem of DC arc discharge extinction, which effectively ensures the continuous discharge time and stability of arc discharge. The experimental results show that the pulse frequency and duty ratio of electron beam current are modulated by the extraction voltage. And, in a certain range, the beam current increases with improvement of the extraction voltage tol the saturation values, and the maximum reaches up to 1A. Meanwhile, the excessive frequency and pulse width of the extraction of voltage is not conducive to the stability of the beam current.关键词
电子束/真空电弧等离子体/重复频率/占空比/自触发电路Key words
electron beam/vacuum arc plasma/repetition frequency/pulse duty ratio/self-excited circuit引用本文复制引用
陈俊,陈仕修,肖集雄,高深,蔡华锋,季曾超..真空电弧等离子中提取重频电子束的实验研究[J].高电压技术,2018,44(6):1961-1967,7.基金项目
国家自然科学基金(11075123 （）
51207171). Project supported by National Natural Science Foundation of China(11075123, 51207171). （11075123, 51207171）
