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13 September 2002 Lasing performance of a chemical oxygen iodine laser (COIL) with advanced ejector nozzle banks
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Proceedings Volume 4760, High-Power Laser Ablation IV; (2002) https://doi.org/10.1117/12.482127
Event: International Symposium on High-Power Laser Ablation 2002, 2002, Taos, New Mexico, United States
Abstract
Experimental lasing results for the Chemical Oxygen Iodine Laser, (COIL), using four different ejector nozzle configurations are presented. These nozzle banks differed in the location of Iodine injection, the area of the oxygen nozzles, and the nozzle contour of the primary driver nitrogen. The aerodynamic choking of the oxygen jets caused by the under expanded primary driver nitrogen resulted in a reduction of the O2 (1(Delta) ) yield and chemical efficiency. Dilution of chlorine with helium in the ratio of 1:1 reduces the partial pressure of oxygen and increases the velocity resulting in a chemical efficiency of 25% at 250 mmoles/sec and 23% at 500mmoles/sec of driver nitrogen respectively. The corresponding Pitot pressures are 50 and 90 torr.
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Nickolay A. Khvatov, Valeri D. Nikolaev, Michael I. Svistun, Marsel V. Zagidullin, and Gordon D. Hager "Lasing performance of a chemical oxygen iodine laser (COIL) with advanced ejector nozzle banks", Proc. SPIE 4760, High-Power Laser Ablation IV, (13 September 2002); https://doi.org/10.1117/12.482127
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