Title :
The cathode fall potential and the threshold current in terms of the ecton mechanism of a vacuum arc
Author_Institution :
Inst. of Electrophys., Acad. of Sci., Ekaterinburg, Russia
Abstract :
Based on the ecton mechanism of the operation of a vacuum arc, it is concluded that the cathode fall potential is the fall voltage across the nonideal plasma produced by a microexplosion at the cathode surface. The threshold current is treated as the least current responsible for the pressure in the cathode spot necessary to reproduce a cathode liquid-metal jet whose dimensions are not less than those of the jet produced in the preceding cycle
Keywords :
cathodes; explosions; jets; liquid metals; plasma; vacuum arcs; cathode fall potential; cathode liquid-metal jet; cathode spot pressure; cathode surface; ecton mechanism; microexplosion; threshold current; vacuum arc; Cathodes; Conductivity; Copper; Electron emission; Explosions; Plasma confinement; Plasma materials processing; Plasma temperature; Threshold current; Vacuum arcs;
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.1998.740630
