Share Email Print
cover

Proceedings Paper

Experimental results on chemical generation of atomic iodine via Cl atoms for chemical oxygen-iodine laser
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

An alternative chemical way of atomic iodine generation for the chemical oxygen-iodine laser (COIL) was studied. This development was aimed at the laser power increase and simplification of the laser operation control. The method is based on the fast reaction of hydrogen iodide with chemically produced chlorine atoms. Kinetics of the process was studied in two types of the small-scale reactor and verified in the cavity of the supersonic COIL. The optimum yield of atomic iodine formation in the nitrogen atmosphere was very high (up to 100%) even in the COIL cavity and declined slightly with the distance from the supersonic nozzle throat. In the first experiments of atomic iodine generation in the flow of singlet oxygen in COIL, the gain of 0.18%.cm-1 was attained at rather low flow rate of atomic iodine (0.9 mmol.s-1). In earlier investigation of COIL in the conventional arrangement with molecular iodine, no gain was achieved at the corresponding I2 flow rate (0.45 mmol.s-1). In the COIL with the new method of chemical generation of atomic iodine, a nearly constant gain along the flow axis was measured. It gives evidence that there is no strong quencher of excited atomic iodine in the reaction mixture. The published data represent the first results on gain measurement in the COIL with chemically generated atomic iodine. They promise an improvement of the COIL operation using the chemically generated atomic iodine.

Paper Details

Date Published: 10 November 2003
PDF: 7 pages
Proc. SPIE 5120, XIV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, (10 November 2003); doi: 10.1117/12.515576
Show Author Affiliations
Otomar Spalek, Institute of Physics (Czech Republic)
Institute of Inorganic Chemistry (Czech Republic)
Vit Jirasek, Institute of Physics (Czech Republic)
Institute of Inorganic Chemistry (Czech Republic)
Miroslav Censky, Institute of Physics (Czech Republic)
Institute of Inorganic Chemistry (Czech Republic)
Jarmila Kodymova, Institute of Physics (Czech Republic)
Ivo Jakubec, Institute of Inorganic Chemistry (Czech Republic)
Gordon D. Hager, Air Force Research Lab. (United States)


Published in SPIE Proceedings Vol. 5120:
XIV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers
Krzysztof M. Abramski; Edward F. Plinski; Wieslaw Wolinski, Editor(s)

© SPIE. Terms of Use
Back to Top