Title :
Initial stage of unipolar arc ignition
Author_Institution :
Dept. of Robotics, Nat. Aerosp. Univ., Kharkov, Ukraine
Abstract :
In the paper the theoretical modeling of initial stage of the unipolar arc ignition is described. It was shown that the ignition process may depend on the external circuit characteristics especially on the plasma-electrode capacity. The phenomena of small (up to several μm) crater formation can be explained on the basis of accumulated discharge concept. A very strong dependence of arc spot behavior on plasma parameters was found.
Keywords :
cathodes; electron density; plasma density; vacuum arcs; accumulated discharge; arc spot behavior; electron current density; external circuit characteristics; ignition process; plasma electron energy; plasma parameters; plasma-electrode capacity; small crater formation; spot formation; theoretical modeling; unipolar arc ignition initial stage; Circuits; Electrodes; Electrons; Ignition; Plasma density; Plasma properties; Rough surfaces; Surface discharges; Surface roughness; Voltage;
Conference_Titel :
Discharges and Electrical Insulation in Vacuum, 2002. 20th International Symposium on
Print_ISBN :
0-7803-7394-4
DOI :
10.1109/ISDEIV.2002.1027361
