Title :
Influence of the angular distributions of the cathode ions on the current flow regime in a high current vacuum arc
Author :
Londer, J.I. ; Ulyanov, K.N.
Author_Institution :
All-Russian Electrotechnical Inst., Moscow, Russia
Abstract :
The work considers the influence of the angular distribution of cathode ions on parameters of the vacuum arc. It is shown that mutual collisions of the fast ions flowing from different cathode spots at a current density typical for a high current arc can result in a high ion temperature value at the cathode plasma boundary. The limit for a current density at a stable current flow region versus the width of the angular distribution of the cathode ions is determined The formula for a maximal possible value of the ion-sound velocity is obtained.
Keywords :
cathodes; current density; ions; vacuum arcs; angular distribution; cathode ions; cathode plasma boundary; current density; high current arc; high current vacuum arc; high ion temperature; ion-sound velocity; stable current flow region; vacuum arc parameters; Anodes; Cathodes; Current density; Equations; Fires; Hydrodynamics; Plasma density; Plasma stability; Plasma temperature; Vacuum arcs;
Conference_Titel :
Discharges and Electrical Insulation in Vacuum, 2002. 20th International Symposium on
Print_ISBN :
0-7803-7394-4
DOI :
10.1109/ISDEIV.2002.1027343
