The C2-radicals in the lower electronic statea 3 II u have been studied by the method of laser-excited luminescence of products of ethylene IR photolysis. The dependence of C2-radical concentration on IR field power density and its time evolution have been investigated. The threshold characteristics of C2-radical occurrence and the ratio between excited and unexcited radicals have been determined. Different mechanisms for their formation are being discussed.
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R.V.Ambartzumian, N.V.Chekalin, V.S.Letokhov, E.A.Ryabov: Chem. Phys. Lett.36, 301 (1975)
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Chekalin, N.V., Dolzhikov, V.S., Letokhov, V.S. et al. Dye laser probing of primary C2 radicals formed by IR intense field photolysis of ethylene. Appl. Phys. 12, 191–195 (1977). https://doi.org/10.1007/BF00896147