Study of the production of S2(B) from the recombination of sulfur atoms

Pascale Prigent; Henri Brunet

doi:10.1117/12.25890

1 February 1991 Study of the production of S2(B) from the recombination of sulfur atoms

Pascale Prigent, Henri Brunet

Proceedings Volume 1397, 8th Intl Symp on Gas Flow and Chemical Lasers; (1991) https://doi.org/10.1117/12.25890
Event: Eighth International Symposium on Gas-Flow and Chemical Lasers, 1990, Madrid, Spain

Abstract

Chemiluminescence emitted during the recombination of ground state S atoms was studied in the aim of obtaining a laser emission on the B-X electronic transition of the sulfur molecule. S atoms were produced by reaction of fluorine atoms with hydrogen sulphide in a supersonic expansion. F atoms were produced in a combustor from the reaction of excess NF3 and H2 with He diluent at pressures from 1.3 to 3 atm. Chemiluminescence was observed in the supersonic flow at pressures ranging from 20 to 70 Torr. Experimental spectra were compared to synthetic ones. At a pressure of 70 Torr, a population density of S2(B) close to 108 molecules/cm3 was determined by chemiluminescence intensity measurements. This value is in reasonable agreement with that predicted by our kinetics modeling.

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Pascale Prigent and Henri Brunet "Study of the production of S2(B) from the recombination of sulfur atoms", Proc. SPIE 1397, 8th Intl Symp on Gas Flow and Chemical Lasers, (1 February 1991); https://doi.org/10.1117/12.25890

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