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Proceedings Paper

Chemical oxygen-iodine laser (COIL) kinetics and mechanisms
Author(s): Anatoly V. Komissarov; Vasily Goncharov; Michael C. Heaven
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Paper 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.

Paper Details

Date Published: 25 January 2001
PDF: 6 pages
Proc. SPIE 4184, XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, (25 January 2001); doi: 10.1117/12.414032
Show Author Affiliations
Anatoly V. Komissarov, Emory Univ. (United States)
Vasily Goncharov, Emory Univ. (United States)
Michael C. Heaven, Emory Univ. (United States)

Published in SPIE Proceedings Vol. 4184:
XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference
Antonio Lapucci; Marco Ciofini, Editor(s)

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