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Proceedings Paper

New Preionization Techniques For Gas Lasers By Using A Formed Ferrite Plasma Source
Author(s): K. Watanabe; F. A. van Goor; R. Fujimoto; W. J. Witteman
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Paper Abstract

Gas laser preionization techniques using formed ferrite plasma sources (FFPS) are proposed and experimentally demonstrated in two different ways of both a long-distance uniform UV light source and a new type of plasma cathode intended for x-ray generation. The UV source worked well as a preionizer by creating a linear plasma over a 36-cm span along CO2-laser electrodes in an 1:1:8 mixture of 1 atm, and enabled the laser to operate under high energy depositions up to 300 J/l-atm. An x-ray gun diode employing a 6-cm FFPS as a plasma cathode showed high perveance for the small cathode dimension allowing a high anode current of 150 A at 70-kV applied voltage for generating x-rays. The possibilty of the FFPS as new preionization sources for both single-shot and high-repetition-rate operation of excimer and CO2 lasers is discussed.

Paper Details

Date Published: 20 June 1989
PDF: 8 pages
Proc. SPIE 1031, 7th Intl Symp on Gas Flow and Chemical Lasers, (20 June 1989); doi: 10.1117/12.950559
Show Author Affiliations
K. Watanabe, Twente University of Technology (The Netherlands)
F. A. van Goor, Twente University of Technology (The Netherlands)
R. Fujimoto, The National Defense Academy (Japan)
W. J. Witteman, Twente University of Technology (Netherlands)


Published in SPIE Proceedings Vol. 1031:
7th Intl Symp on Gas Flow and Chemical Lasers
Dieter Schuoecker, Editor(s)

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