Title :
On criteria of discharge triggering by macroparticles in vacuum
Author :
Nevrovsky, V.A. ; Pertsev, A.A. ; Rylskaya, L.A.
Author_Institution :
Dept. of Aircraft Technol., Moscow State Univ., Russia
Abstract :
Free particles in vacuum are known to reduce electric insulation in industrial devices drastically. The paper suggests a combined criteria of breakdown using a concept of charge loss by cold emission when a macroparticle is traveling across a vacuum gap. The concept allows the avoidance of infinite field strength when the particle comes very close to the electrode. Experimental data on macroparticle-induced breakdowns are presented. The data imply the existence of two requirements for discharge initiation by the particle. They seem to be appreciable electric field and a certain nonvanishing distance of the particle to the opposite electrode
Keywords :
electric breakdown; electrodes; insulation testing; vacuum breakdown; vacuum insulation; charge loss; cold emission; discharge initiation; discharge triggering; electrode; free particles; infinite field strength; macroparticle-induced breakdowns; vacuum gap; Breakdown voltage; Data analysis; Dielectrics and electrical insulation; Electric breakdown; Electrodes; Predictive models; Switches; Vacuum arcs; Vacuum breakdown; Vacuum technology;
Conference_Titel :
Discharges and Electrical Insulation in Vacuum, 1996. Proceedings. ISDEIV., XVIIth International Symposium on
Conference_Location :
Berkeley, CA
Print_ISBN :
0-7803-2906-6
DOI :
10.1109/DEIV.1996.545312
