Title :
Analysis of elementary processes leading to surface flashover in vacuum
Author_Institution :
Moscow State Univ., Russia
Abstract :
The paper presents a survey and analysis of preflashover processes at the solid-vacuum interface (including field emission) from a triple point at a cathode and surface charge build-up along the total length of a dielectric (and especially immediately near the emission source) due to secondary electron emission resulting in field intensification near the triple point. The possibility of large intensification of the electric field near a triple point and its relation to the surface flashover are also discussed
Keywords :
cathodes; electric fields; electron field emission; flashover; insulators; secondary electron emission; surface discharges; vacuum breakdown; vacuum insulation; cathode triple point; electric field intensification; elementary processes; field emission; insulator surface flashover; preflashover processes; secondary electron emission; solid-vacuum interface; surface charge build-up; vacuum; Cathodes; Conducting materials; Dielectric materials; Dielectrics and electrical insulation; Electron emission; Flashover; Hydrocarbons; Hydrogen; Ionization; Resistance heating;
Conference_Titel :
Discharges and Electrical Insulation in Vacuum, 1998. Proceedings ISDEIV. XVIIIth International Symposium on
Conference_Location :
Eindhoven
Print_ISBN :
0-7803-3953-3
DOI :
10.1109/DEIV.1998.740598
