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Proceedings Paper

Robust, plasma-based, variable pulse-length electron beam source
Author(s): R. Liou
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Paper Abstract

A simple, robust, plasma-based, variable pulse-length electron beam source that produces 10's nsec to 100's msec pulses is reported. Different pulse-lengths were achieved through utilization of different modes of operation of the back-lighted thyratron or pseudospark, which were controlled by external circuitry. Three distinct modes are identified: a transient hollow cathode discharge, a quasi steady-state hollow cathode discharge and a super-emissive cathode mode. During the transient hollow cathode discharge an electron beam with duration - 50 nsec, current - 60 A, normalized brightness - 4*101° A/m2rad2 was measured. The electron beam during operation in the super-emissive mode has beam current ---100 A and duration - 1 µsec. The quasi steady state hollow cathode discharge produces an electron beam with energy -- 100's eV and duration --100's msec. Several applications, including the electron beam ion trap, are to be discussed.

Paper Details

Date Published: 14 December 1992
PDF: 2 pages
Proc. SPIE 1929, 17th International Conference on Infrared and Millimeter Waves, 19290V (14 December 1992); doi: 10.1117/12.2298148
Show Author Affiliations
R. Liou, Univ. of Southern California (United States)


Published in SPIE Proceedings Vol. 1929:
17th International Conference on Infrared and Millimeter Waves
Richard J. Temkin, Editor(s)

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