摘要
本文研究和设计了静电聚焦型的径向放电真空电弧等离子体阴极脉冲电子束源。在分析轴向放电的真空电弧等离子体阴极稳定性的基础上,改进结构,设计了径向放电的真空电弧等离子体阴极,由于表面比较狭窄,产生真空电弧后,阴极斑点的高速移动也都位于直径小于2mm的环形阴极内表面上,从而使得电子发射效率较为稳定。并以此为发射阴极,设计径向放电结构的空心阳极等离子体阴极电子束源,该电子束源为无磁场引导的皮尔斯型电子束源,其主要由等离子体阴极和静电聚焦系统两部分组成。实验测量过程中,采用法拉第筒测量了电子束的相关参数,得到比较稳定的脉冲电子束。
A pulse electron beam source of vacuum arc plasma cathode with electrostatic focusing system based on radial discharge was proposed and designed in this paper.With the consideration of the stability of vacuum arc plasma cathode with axial discharge,the structure was improved for vacuum arc plasma cathode with radial discharge.Because the surface is narrow and small,high-speed movement of cathode spot occurred only over annular cathode surface whose diameter was less than 2mm,thereby the electron emission efficiency was stable.Then with the emission cathode,pulse electron beam source of vacuum arc plasma cathode with radial discharge was designed.It is a magnetic field source-free electron beam source,consisting of plasma cathode and electrostatic focusing system.In the experiments,a faraday cup was used to measure the parameters of electron beam.The results show that the electron source is stable.
作者
田微
盖斐
张俊敏
何顺帆
王黎
Tian Wei;Gai Fei;Zhang Junmin;He Shunfan;Wang Li(South-Central University for Nationalities,Wuhan 430074 China;China Three Gorges Corporation,Chengdu 610041 China)
出处
《电工技术学报》
EI
CSCD
北大核心
2019年第6期1338-1344,共7页
Transactions of China Electrotechnical Society
基金
湖北省自然科学基金(2018CFB492)
国家自然科学基金(51641708)
国家留学基金委(201808420067)资助项目
