150−230 nm Chemiluminescence from C,CN and CO and observation of C(3P, 1D) in the N/C2F4 and N/O2/C2F4 reactions |
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Authors: | SE Johnson A Fontijn |
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Institution: | AeroChem Research Laboratories, Inc., Princeton, New Jersey 08540, USA |
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Abstract: | Addition of C2F4 to a flowing nitrogen afterglow gives rise to CN(E2ΣA2Π, X2Σ), CN(F2 ΔA2Π) and C (156.1, 165.5 and 193.0 nm) chemiluminescence. Transitions have been observed from CN(E2Σ) up to ν′ = 2 from which vibrational constants for this state have been recalculated to be ωeχe = 13.8 cm?1 and ωe = 1698.4 cm?1. Ground state and metasrable C(3P, 1D) have been detected and studied via resonance fluorescence. Addition of O2 to the N/C2F4 reaction system reduces C and CN emission intensities and C] while giving rise to CO(a3Π-X1Σ), CO(A1ΠX1Σ) and NO(B2ΠX2Π) emission. Probable excitation mechanisms are discussed. |
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