Title :
Experimental studies of long-lifetime cold cathodes for high power microwave oscillators
Author :
Gunin, A.V. ; Landl, V.F. ; Korovin, S.D. ; Mesyats, G.A. ; Rostov, V.V.
Author_Institution :
Inst. of High-Current Electron., Acad. of Sci., Tomsk, Russia
Abstract :
Electron beam parameters and material consumption were measured for edge-type explosive-emission cathodes made from different materials, working in a BWO-based HPM source, at a large number of pulses. Most of the materials demonstrated several degradation of emission properties and decrease in microwave emission after 10/sup 4/-10/sup 6/ pulses. A graphite cathode demonstrated stabilization of its emission parameters after 10/sup 7/ pulses and successful operation during 10/sup 8/ pulses at a pulse repetition rate of 100-150 pps.
Keywords :
cathodes; graphite; microwave oscillators; pulse generators; pulsed power supplies; pulsed power switches; C; electron beam parameters; emission parameters stabilisation; emission properties degradation; graphite cathode; high power microwave oscillators; long-lifetime cold cathodes; material consumption; microwave emission reduction; pulse repetition rate; pulsed power supply; Cathodes; Coaxial components; Current density; Dielectrics; Diodes; Electron beams; Magnetic field measurement; Microwave oscillators; Pulse measurements; Voltage;
Conference_Titel :
Pulsed Power Conference, 1999. Digest of Technical Papers. 12th IEEE International
Conference_Location :
Monterey, CA, USA
Print_ISBN :
0-7803-5498-2
DOI :
10.1109/PPC.1999.823644
