A Low-Cost Metallic Cathode for a Vircator HPM Source
Mankowski, J.
Chen, Y.
Dickens, J.
Neuber, A.
Gale, R.
Center for Pulsed Power & Power Electron., Texas Tech Univ, Lubbock, TX
This paper appears in: Pulsed Power Conference, 2005 IEEE Publication Date: 13-17 June 2005
On page(s):
66
- 69
Location: Monterey, CA
ISBN: 0-7803-9189-6
Digital Object Identifier: 10.1109/PPC.2005.300492
Current Version Published: 2007-02-05
Abstract
Recent research efforts at TTU include the testing of a rapidly charged, rep-rated Marx generator driving a reflex triode vircator [1]. As expected, the burning of the cathode material (ordinary cloth velvet), was the primary failure mechanism during repetitive operation. In an effort to achieve a repetitive vircator (>10 Hz), we are exploring a low-cost, all-metal cathode. The cathode is made from aluminum with a patterned surface. A typical pattern is composed of peaks and troughs with dimensions on the order of tens of microns. The pattern is achieved with a simple, low-cost chemical etching process. Results include current, voltage, and microwave waveforms from two solid metal cathodes and a cloth velvet cathode.
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