Title :
Mechanism of Surface Charging of High-Voltage Insulators in Vacuum
Author :
de Tourreil, C.H. ; Srivastava, K.D.
Author_Institution :
Department of Materials Science Research, Hydro-Quebec Institute of Research, Varennes, Que., Canada
fDate :
3/1/1973 12:00:00 AM
Abstract :
In vacuum, the surface of insulators becomes electrically charged when subjected to high-voltage stresses. The charging mechanism is described. A model simulating the charging shows that the surface charge densities are proportional to the applied voltage and depend on the secondary electron emission of the dielectric surface. It is also time dependent. Surface charges are shown to explain many results obtained in studies of insulator surface breakdown.
Keywords :
Cathodes; Current measurement; Dielectric measurements; Dielectrics and electrical insulation; Electric breakdown; Electrodes; Electron emission; Surface charging; Surface cleaning; Voltage;
Journal_Title :
Electrical Insulation, IEEE Transactions on
DOI :
10.1109/TEI.1973.299238
