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As we know, before flashover across an insulator surface under high electric field in vacuum, there are charging phenomena occurring on the insulator surface, which significantly affect the developing process of flashover. Based on the secondary electron emission avalanche (SEEA) model, and by using the Monte Carlo method, a two-dimensional analysis of surface charge density on cylindrical and conical...
This paper reported the surface and volume resistivity of typical insulators under atmospheric condition and vacuum condition. The measured materials are some kinds of alumina ceramics which have different purity of Al2O3 component. It was confirmed that the surface resistivity for almost all of the insulator materials under vacuum condition was higher than that under atmospheric condition. In addition,...
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