Title :
State of the theory of cathode spot phenomena in vacuum arcs
Author_Institution :
Electr. Discharge & Plasma Lab., Tel Aviv Univ., Israel
Abstract :
The most important near cathode phenomena and processes in the plasma expansion region is discussed. The experimental results with different spot types are summarized. The theoretical models and existing equation systems are discussed. The results of influence of the cathode material, geometry and its surface state, peculiarity of nonfree near cathode plasma flow and plasma acceleration mechanisms in vacuum arc jet are considered. The spot motion and the temporal dynamics of different cathode spot types and conditions of its appearance are presented
Keywords :
cathodes; plasma jets; vacuum arcs; cathode geometry; cathode material; cathode spot phenomena; equation systems; near cathode phenomena; nonfree near cathode plasma flow; plasma acceleration mechanisms; plasma expansion region; spot motion; surface state; temporal dynamics; theoretical models; vacuum arc jet; vacuum arcs; Cathodes; Electrodes; Equations; Geometry; Laboratories; Modems; Plasma accelerators; Plasma materials processing; Plasma measurements; Vacuum arcs;
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.1996.545348
