Combustion of CSâ‚‚/Oâ‚‚ in a laminar mixing layer and processes in the CO chemical laser

The combustion of CSâ‚‚ and Oâ‚‚ in a free burning laminar mixing layer at low pressure was investigated using emission spectroscopy. The temperature fields, CO vibrational distributions, and CO concentrations were measured. The data indicate that vibration ally excited CO was produced in the mixing layer flames, but that there were no vibrational population inversions. In comparison with the CSâ‚‚/Oâ‚‚ premixed flames, the mixing layer flames favored greater production of COS and COâ‚‚. Computer modeling was used to study the mechanisms responsible for the production of COS and COâ‚‚, and to study how the branching chain mechanism responsible for production of CO affects the behavior of the mixing layer flame. The influences of the gas additives, Nâ‚‚O, COS, and CNBr, were also investigated.