Chemical oxygen-iodine laser with atomic iodine generated via Cl or F atoms

Otomar Spalek; Vit Jirasek; Miroslav Censky; Jarmila Kodymova; Ivo Jakubec; Gordon D. Hager

doi:10.1117/12.611007

23 March 2005 Chemical oxygen-iodine laser with atomic iodine generated via Cl or F atoms

Otomar Spalek, Vit Jirasek, Miroslav Censky, Jarmila Kodymova, Ivo Jakubec, Gordon D. Hager

Proceedings Volume 5777, XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers; (2005) https://doi.org/10.1117/12.611007
Event: XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 2004, Prague, Czech Republic

Abstract

Two alternative chemical methods of atomic iodine generation for a chemical oxygen-iodine laser (COIL) were studied. These methods are based on fast reactions of gaseous hydrogen iodide with chemically produced chlorine and fluorine atoms. Both processes were studied first in small-scale reactors. A yield of atomic iodine in the Cl system and nitrogen (non-reactive) atmosphere exceeded 80%, while in the F system it was only up to 27% related to F₂ or 50% related to HI. The process of atomic iodine generation via Cl atoms was employed in operation of the supersonic COIL. A laser power of 430 W at 40 mmol Cl₂/s, and the small signal gain up to 0.4%/cm were attained. The proposed methods promise an increase in laser power, easier control of laser operation, and simpler iodine management in comparison with the conventional source of atomic iodine using I₂. The experimental results obtained so far with this experimental arrangement did not proved yet increasing COIL chemical efficiency because some process quenching a part of singlet oxygen was indicated. Therefore a modified experimental set-up has been designed and prepared for further investigation.

Citation Download Citation

Otomar Spalek, Vit Jirasek, Miroslav Censky, Jarmila Kodymova, Ivo Jakubec, and Gordon D. Hager "Chemical oxygen-iodine laser with atomic iodine generated via Cl or F atoms", Proc. SPIE 5777, XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, (23 March 2005); https://doi.org/10.1117/12.611007

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