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Proceedings Paper

Supersonic COIL with iodine injection in transonic and supersonic sections of the nozzle
Author(s): Salman Rosenwaks; Esther Bruins; Dov Furman; Victor Rybalkin; Boris D. Barmashenko
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Paper 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.

Paper Details

Date Published: 25 January 2001
PDF: 4 pages
Proc. SPIE 4184, XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, (25 January 2001); doi: 10.1117/12.414050
Show Author Affiliations
Salman Rosenwaks, Ben-Gurion Univ. of the Negev (Israel)
Esther Bruins, Ben-Gurion Univ. of the Negev (Israel)
Dov Furman, Ben-Gurion Univ. of the Negev (Israel)
Victor Rybalkin, Ben-Gurion Univ. of the Negev (Israel)
Boris D. Barmashenko, Ben-Gurion Univ. of the Negev (Israel)


Published in SPIE Proceedings Vol. 4184:
XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference
Antonio Lapucci; Marco Ciofini, Editor(s)

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