Supersonic COIL with iodine injection in transonic and supersonic sections of the nozzle

Salman Rosenwaks; Esther Bruins; Dov Furman; Victor Rybalkin; Boris D. Barmashenko

doi:10.1117/12.414050

25 January 2001 Supersonic COIL with iodine injection in transonic and supersonic sections of the nozzle

Salman Rosenwaks, Esther Bruins, Dov Furman, Victor Rybalkin, Boris D. Barmashenko

Proceedings Volume 4184, XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference; (2001) https://doi.org/10.1117/12.414050
Event: XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, 2000, Florence, Italy

Abstract

We report on a detailed experimental study of the gain and temperature in the cavity of a supersonic chemical oxygen-iodine laser operating without primary buffer gas and on preliminary power measurements in this laser. In particular, a study is carried out to find optimal values of the flow parameters corresponding to the maximum gain. The measurements are performed for slit nozzles with different numbers and positions of iodine injection holes. Using a diode laser based diagnostic, the gain and temperature in the cavity are studied. Maximum gain of 0.73%/cm is obtained at chlorine and secondary nitrogen flow rates of 15 mmole/s and 7 mmole/s, respectively, for a slit nozzle with transonic injection of iodine. Preliminary power measurements are performed. For slit nozzle with iodine injection in the diverging part ofthe nozzle output power of 287 W with chemical efficiency of 21% was measured at 15.1 mmole/s of Cl2 with no primary buffer gas. This is the highest reported chemical efficiency of a supersonic COIL operating without primary buffer gas.

Citation Download Citation

Salman Rosenwaks, Esther Bruins, Dov Furman, Victor Rybalkin, and Boris D. Barmashenko "Supersonic COIL with iodine injection in transonic and supersonic sections of the nozzle", Proc. SPIE 4184, XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, (25 January 2001); https://doi.org/10.1117/12.414050

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