We measured dc discharge inception voltage V/sub i/ for various electrode configurations in He, Ar and air in vacuum range from 10/sup 5/ to 10/sup -1/ Pa to determine discharge characteristics under a space vacuum environment. By quantitative consideration of the E/sub i//p distribution in the gap space at the discharge inception, the discharge inception mechanism under non-uniform electric field was investigated in vacuum. At the same time, we observed the discharge profile variation with residual gas pressure and quantitatively analyzed its characteristics, using an image processing technique. Based on the analysis, we found that the dependency of the discharge inception voltage and the length of the discharge path on the residual gas pressure under non-uniform field conditions agreed well with that previously obtained for uniform field conditions.
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机译：我们测量了He，Ar和空气中各种电极配置在10 / sup 5 /至10 / sup -1 / Pa的直流放电起始电压V / sub i /，以确定在空间真空环境下的放电特性。通过定量考虑放电开始时间隙空间中的E / sub i // p分布，在真空中研究了非均匀电场下的放电开始机理。同时，我们观察了排气轮廓随残余气压的变化，并使用图像处理技术定量分析了其特性。在分析的基础上，我们发现在非均匀电场条件下，放电起始电压和放电路径长度对残余气体压力的依赖性与先前在均匀电场条件下获得的相符。
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