There are two kinds of theory for the vacuum surface flashover: secondary electron emission avalanche (SEEA) and electron triggered polarization relaxation (ETPR).
研究真空表面闪络过程有两类理论：二次电子发射崩溃(SEEA)和电子引发极化松弛(ETPR)。
2
The pulse discharge took placed as an electron avalanche along the electric channels formed on the surface.