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Proceedings Paper

Research On Catalysts For Long-Life Closed-Cycle CO2 Laser Operation
Author(s): Barry D. Sidney; David R. Schryer; Billy T. Upchurch; Robert V. Hess; George M. Wood; Irvin M. Miller; Lewis G. Burney; Kenneth G. Brown; John D. Van Norman; Jacqueline Schryer
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Paper Abstract

Long-life, closed-cycle operation of pulsed CO2 lasers requires catalytic CO-02 recombination both to remove 02, which is formed by discharge-induced CO2 decomposition, and to regenerate CO2. Platinum metal on a tin-oxide substrate (Pt/Sn02) has been found to be an effective catalyst for such recombination in the desired temperature range of 25°C to 100°C. This paper presents a description of ongoing research at NASA-LaRC on Pt/Sn02 catalyzed CO-02 recombination. Included are studies with rare-isotope gases since rare-isotope CO2 is desirable as a laser gas for enhanced atmospheric transmission. Results presented include 1) the effects of various catalyst pretreatment techniques on catalyst efficiency 2) development of a technique, verified in a 30-hour test, to prevent isotopic scrambling when C180 and 1802 are reacted in the presence of a common-isotope Pt/Sn'02 catalyst and 3) development of a mathematical model of a laser discharge prior to catalyst introduction.

Paper Details

Date Published: 24 September 1987
PDF: 7 pages
Proc. SPIE 0783, Laser Radar II, (24 September 1987); doi: 10.1117/12.940592
Show Author Affiliations
Barry D. Sidney, Langley Research Center (United States)
David R. Schryer, Langley Research Center (United States)
Billy T. Upchurch, Langley Research Center (United States)
Robert V. Hess, Langley Research Center (United States)
George M. Wood, Langley Research Center (United States)
Irvin M. Miller, Langley Research Center (United States)
Lewis G. Burney, Langley Research Center (United States)
Kenneth G. Brown, Old Dominion University (United States)
John D. Van Norman, Old Dominion University (United States)
Jacqueline Schryer, Old Dominion University (United States)

Published in SPIE Proceedings Vol. 0783:
Laser Radar II
Richard J. Becherer; Robert C. Harney, Editor(s)

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