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Proceedings Paper

Development of advanced generator of singlet oxygen for a COIL
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Paper Abstract

The generator of singlet oxygen (SOG) remains still a challenge for a chemical oxygen-iodine laser (COIL). Hitherto, only chemical generators based on the gas-liquid reaction system (chlorine-basic hydrogen peroxide) can supply singlet oxygen, O2(1Δ), in enough high yields and at pressures to maintain operation of the high power supersonic COIL facilities. Employing conventional generators of jet-type or rotating disc-type makes often problems resulting mainly from liquid droplets entrained by an O2 (1Δ) stream into the laser cavity, and a limited scalability of these generators. Advanced generator concepts investigated currently are based on two different approaches: (i)O2(1Δ) generation by the electrical discharge in various configurations, eliminating thus a liquid chemistry, and (ii) O2(1Δ) generation by the conventional chemistry in novel configurations offering the SOG efficiency increase and eliminating drawbacks of existing devices. One of the advanced concepts of chemical generator - a spray SOG with centrifugal separation of gasliquid phases - has been proposed and investigated in our laboratory. In this paper we present a description of the generator principle, some essential results of theoretical estimations, and interim experimental results obtained with the spray SOG.

Paper Details

Date Published: 7 June 2006
PDF: 11 pages
Proc. SPIE 6261, High-Power Laser Ablation VI, 62611S (7 June 2006); doi: 10.1117/12.674692
Show Author Affiliations
Jarmila Kodymova, Institute of Physics (Czech Republic)
Otomar Špalek, Institute of Physics (Czech Republic)
Vít Jirásek, Institute of Physics (Czech Republic)
Miroslav Čenský, Institute of Physics (Czech Republic)
Jan Hrubý, Institute of Thermomechanics (Czech Republic)

Published in SPIE Proceedings Vol. 6261:
High-Power Laser Ablation VI
Claude R. Phipps, Editor(s)

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