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Proceedings Paper

Lasing performance of a chemical oxygen iodine laser (COIL) with advanced ejector nozzle banks
Author(s): Nickolay A. Khvatov; Valeri D. Nikolaev; Michael I. Svistun; Marsel V. Zagidullin; Gordon D. Hager
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Paper 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.

Paper Details

Date Published: 13 September 2002
PDF: 10 pages
Proc. SPIE 4760, High-Power Laser Ablation IV, (13 September 2002); doi: 10.1117/12.482127
Show Author Affiliations
Nickolay A. Khvatov, P.N. Lebedev Physical Institute (Russia)
Valeri D. Nikolaev, P.N. Lebedev Physical Institute (Russia)
Michael I. Svistun, P.N. Lebedev Physical Institute (Russia)
Marsel V. Zagidullin, P.N. Lebedev Physical Institute (Russia)
Gordon D. Hager, Air Force Research Lab. (United States)

Published in SPIE Proceedings Vol. 4760:
High-Power Laser Ablation IV
Claude R. Phipps, Editor(s)

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