Mechanism and kinetics of iodine dissociation in COIL

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

doi:10.1117/12.465773

6 May 2002 Mechanism and kinetics of iodine dissociation in COIL

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

Proceedings Volume 4631, Gas and Chemical Lasers and Intense Beam Applications III; (2002) https://doi.org/10.1117/12.465773
Event: High-Power Lasers and Applications, 2002, San Jose, California, United States

Abstract

Dissociation of I2 by O2(a1D), with subsequent excitation of I*, was first observed by Arnold et al.1 in 1966. This key discovery led to the eventual development of the chemical oxygen iodine laser (COIL). The mechanism by which I₂ is dissociated was not determined by Arnold et al.1 and has remained elusive, despite many experimental attempts to unravel this question. Although the details are not known, it is apparent that a complex interplay between vibrationally and electronically excited states of I₂ is involved. Vibrationally excited states of O₂ have also been implicated. Characterization of the dissociation process is an important issue for COIL as the efficiency is impacted by the energy cost of dissociating the iodine. In this paper we provide a historical summary of work on the dissociation mechanism, and summarize the current understanding of the problem.

Citation Download Citation

Michael C. Heaven, Anatoly V. Komissarov, and Vasily Goncharov "Mechanism and kinetics of iodine dissociation in COIL", Proc. SPIE 4631, Gas and Chemical Lasers and Intense Beam Applications III, (6 May 2002); https://doi.org/10.1117/12.465773

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