Abstract
We describe photochemical production of C2 in the upper (d 3Πg) and the lower (a 3Πu) levels of the Swan-band transitions by 266 and 292-nm laser irradiation of flames and room-temperature flows of acetylene and ethylene. Topics treated include the spectroscopy of the Swan bands, lifetimes and quenching of the Swan-band emission, intensity dependences of the Swan-band emission in several environments, profiles of C2 in low-pressure hydrocarbon flames, and the affect of Swan-band emission on three-photon-excited fluorescence detection of atomic hydrogen in hydrocarbon flames.
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This work was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Chemical Sciences
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Goldsmith, J.E.M., Kearsley, D.T.B. C2 creation, emission, and laser-induced fluorescence in flames and cold gases. Appl. Phys. B 50, 371–379 (1990). https://doi.org/10.1007/BF00325089
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DOI: https://doi.org/10.1007/BF00325089