摘要
介绍了阴极弧斑放电的基本特征。参考前人的研究模型和最新的实验结果，系统地分析了阴极弧斑放电的机理和过程：电子的爆裂发射模型；热场致发射理论；阴极电位降区满足的Ｍａｃｋｅｏｗｎ 公式；阴极弧斑在磁场中的运动机理。最后讨论了气压对弧斑运动的影响，解释了阳极弧斑放电特征。
The characteristics of cathode spots arc were introduced in this paper.Considering the theoretical models and the new experimental results,the mechanism and process of the cathode arc discharge were analyzed systematically:electron explosive emission model,thermionic field emission theory,Mackeown formula in collisionless layer at cathode,and spots motion model in a magnetic field.In the end,the mechanism of the pressure effects on the spots motion and the anode spots characteristics were discussed.
出处
《真空与低温》
1999年第4期202-207,共6页
Vacuum and Cryogenics
关键词
阴极弧斑
热场致发射
电子爆裂发射
机理
cathode spots,thermionic field emission,explosive emission,spots moving
