Title :
The motion of cathode spot in self magnetic field of high current arc discharge
Abstract :
The cathode spot dynamics on pure metals Ti, Cu, Pb, Zn, Sn, in high current vacuum arcs was investigated. The experimental data show that the spot velocity is only dependent on magnetic flux density and cathode material. This dependency has nonlinear shape and is analogous with the velocity of a single cathode spot in a tangential magnetic field. The semiempirical expression for calculation emission zone of the cathode for any form of impulse of a current is offered
Keywords :
cathodes; magnetic fields; magnetic flux; vacuum arcs; Cu; Pb; Sn; Ti; Zn; cathode material; cathode spot dynamics; cathode spot motion; current impulse; emission zone; high current arc discharge; high current vacuum arcs; magnetic flux density; self magnetic field; spot velocity; Anodes; Arc discharges; Cathodes; Fault location; Magnetic fields; Magnetic materials; Plasma density; Plasma sources; Surface discharges; Threshold voltage;
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.1998.740635
