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Proceedings Paper

Experimental study of the production of electronically excited IF in a supersonic flow
Author(s): Francois Voignier; B. Leporcq
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Paper Abstract

The B yields X electronic transition of the iodine monofluoride (IF) molecule is a well known potential system for a chemical laser operating at visible wavelengths. By using the reaction between fluorine atoms and excited atomic iodine, IF(B) was produced in a supersonic flow. F and I atoms are produced in a combustor and excited I atoms are produced by mixing excited O2(1(Delta) ) to the expanded supersonic flow of combustion products. Chemiluminescence of IF was observed at a pressure ranging from 5 to 10 Torr. Experimental spectra have been recorded and compared to synthetic ones. A population density of IF(B) close to 4 X 109 molecules/cm3 has been determined. No laser effect has been observed. A computer code has been developed and applied to the kinetic scheme. Calculated gain profiles, IF(B) population density, and laser power are in disagreement with the experimental values. Adding fluorine (F2) to the flow increases the measured population density of IF(B) by a factor of 10. This value seems to confirm the existence of the step I* + F2 yields IF2 in the production of IF(B).

Paper Details

Date Published: 4 May 1993
PDF: 4 pages
Proc. SPIE 1810, 9th International Symposium on Gas Flow and Chemical Lasers, (4 May 1993); doi: 10.1117/12.144645
Show Author Affiliations
Francois Voignier, Laserdot (France)
B. Leporcq, IMFL/ONERA (France)

Published in SPIE Proceedings Vol. 1810:
9th International Symposium on Gas Flow and Chemical Lasers
Costas Fotakis; Costas Kalpouzos; Theodore G. Papazoglou, Editor(s)

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