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Proceedings Paper

PASOTRONtm high-energy microwave source
Author(s): Dan M. Goebel; Robert W. Schumacher; Jennifer M. Butler; Jay Hyman Jr.; Joseph Santoru; Ron M. Watkins; Robin J. Harvey; Franklin A. Dolezal; Robert L. Eisenhart; Authur J. Schneider
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Paper Abstract

A unique, high-energy microwave source, called PASOTRON (Plasma-Assisted Slow-wave Oscillator), has been developed. The PASOTRON utilizes a long-pulse E-gun and plasma- filled slow-wave structure (SWS) to produce high-energy pulses from a simple, lightweight device that utilizes no externally produced magnetic fields. Long pulses are obtained from a novel E-gun that employs a low-pressure glow discharge to provide a stable, high current- density electron source. The electron accelerator consists of a high-perveance, multi-aperture array. The E-beam is operated in the ion-focused regime where the plasma filling the SWS space-charge neutralizes the beam, and the self-pinch force compresses the beamlets and increases the beam current density. A scale-model PASOTRON, operating as a backward- wave oscillator in C-band with a 100-kV E-beam, has produced output powers in the 3 to 5 MW range and pulse lengths of over 100 microsecond(s) ec, corresponding to an integrated energy per pulse of up to 500 J. The E-beam to microwave-radiation power conversion efficiency is about 20%.

Paper Details

Date Published: 1 April 1992
PDF: 11 pages
Proc. SPIE 1629, Intense Microwave and Particle Beams III, (1 April 1992); doi: 10.1117/12.137167
Show Author Affiliations
Dan M. Goebel, Hughes Research Labs. (United States)
Robert W. Schumacher, Hughes Research Labs. (United States)
Jennifer M. Butler, Hughes Research Labs. (United States)
Jay Hyman Jr., Hughes Research Labs. (United States)
Joseph Santoru, Hughes Research Labs. (United States)
Ron M. Watkins, Hughes Research Labs. (United States)
Robin J. Harvey, Hughes Research Labs. (United States)
Franklin A. Dolezal, Hughes Research Labs. (United States)
Robert L. Eisenhart, Hughes Missile Systems Group (United States)
Authur J. Schneider, Hughes Missile Systems Group (United States)

Published in SPIE Proceedings Vol. 1629:
Intense Microwave and Particle Beams III
Howard E. Brandt, Editor(s)

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