Oxygen-iodine active medium with external production of iodine in a DC glow discharge

Pavel Anatolievich Mikheyev; Valeriy N. Azyazov; Adrew V. Mezhenin; Nikolay I. Ufimtsev; Alexander A. Shepelenko; Anatoly I. Voronov; Nikolay V. Kupryaev; Sergey Yu. Pichugin; Mikhail V. Vorobyov

doi:10.1117/12.738061

8 May 2007 Oxygen-iodine active medium with external production of iodine in a DC glow discharge

Pavel Anatolievich Mikheyev, Valeriy N. Azyazov, Adrew V. Mezhenin, Nikolay I. Ufimtsev, Alexander A. Shepelenko, Anatoly I. Voronov, Nikolay V. Kupryaev, Sergey Yu. Pichugin, Mikhail V. Vorobyov

Author Affiliations +

Proceedings Volume 6346, XVI International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers; 63460J (2007) https://doi.org/10.1117/12.738061
Event: XVI International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 2006, Gmunden, Austria

Abstract

Experiments with a flow cell apparatus imitating conditions of oxygen-iodine laser, equipped with a chemical jet singlet oxygen generator and an electric discharge iodine generator have been performed. I₂ and CH₃I in the flow of Ar were used as atomic iodine precursors. The distributions of the electronically excited species along the flow were examined detecting their optical emissions. A straightforward comparison of two methods of oxygen-iodine medium production - conventional, by means of I₂ dissociation in the singlet oxygen flow and with iodine atoms produced externally in the electric discharge - was performed. It was found that stored electron energy lifetime had been about 30% longer, when iodine was produced from CH₃I in the discharge, compared to the conventional I₂ dissociation in the singlet oxygen flow. It was observed that maximums of the I(²P_1/2) and I₂(B) concentrations had shifted to the nozzle plane, when I₂ in Ar carrier was subjected to the glow discharge, pointing to a nearly twofold increase in the I₂ dissociation rate. Contrary to the known results for low iodine and singlet oxygen concentrations, squared dependence of the amplitude of the I₂(B) luminescence maximum with I(²P_1/2) concentration was observed in the dissociation region for both methods of iodine production.

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Pavel Anatolievich Mikheyev, Valeriy N. Azyazov, Adrew V. Mezhenin, Nikolay I. Ufimtsev, Alexander A. Shepelenko, Anatoly I. Voronov, Nikolay V. Kupryaev, Sergey Yu. Pichugin, and Mikhail V. Vorobyov "Oxygen-iodine active medium with external production of iodine in a DC glow discharge", Proc. SPIE 6346, XVI International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 63460J (8 May 2007); https://doi.org/10.1117/12.738061

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