Chemical oxygen-iodine laser (COIL) kinetics and mechanisms

Anatoly V. Komissarov; Vasily Goncharov; Michael C. Heaven

doi:10.1117/12.414032

25 January 2001 Chemical oxygen-iodine laser (COIL) kinetics and mechanisms

Anatoly V. Komissarov, Vasily Goncharov, Michael C. Heaven

Proceedings Volume 4184, XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference; (2001) https://doi.org/10.1117/12.414032
Event: XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, 2000, Florence, Italy

Abstract

The dissociation of I2 by O2(a1Æ) is a critical process for the chemical oxygen iodine laser. Despite many years of study the dissociation mechanism is not properly understood. Currently accepted models assume that vibrationally excited I2 is the immediate precursor to atomic I. However, studies of I2 vibrational relaxation kinetics cast doubt on this assignment. New measurements of quenching rate constants for I2(A') indicate that electronically excited I2 is a more likely precursor. A revised kinetic model for the dissociation process is proposed, based on the active participation of electronically excited I2. Vibrationally excited I2 remains an important species in this model as the I2 must be vibrationally excited before the electronically excited states can be accessed. A preliminary rate constant package for the new model is presented.

Citation Download Citation

Anatoly V. Komissarov, Vasily Goncharov, and Michael C. Heaven "Chemical oxygen-iodine laser (COIL) kinetics and mechanisms", Proc. SPIE 4184, XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, (25 January 2001); https://doi.org/10.1117/12.414032

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