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Experimental studies of long-lifetime cold cathodes for high power microwave oscillators

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5 Author(s)
Gunin, A.V. ; Inst. of High-Current Electron., Acad. of Sci., Tomsk, Russia ; Landl, V.F. ; Korovin, S.D. ; Mesyats, G.A.
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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.

Published in:

Pulsed Power Conference, 1999. Digest of Technical Papers. 12th IEEE International  (Volume:2 )

Date of Conference:

27-30 June 1999