Abstract

The reaction of C2 radicals with atomic and molecular oxygen were studied behind reflected shock waves in the temperature range 2750 K≤T≤3950 K by using ring-dye-laser absorption spectroscopy. The shock-induced pyrolysis of acetylene was used as a well-defined C2 source, which was perturbated by the addition of N2O (O-atom source) or O2. The addition of these species results in specific changes in the C2 concentration compared to the unperturbated pyrolysis, mainly caused by the following reactions: {fx1} for which the rate coefficients {fx2} were obtained.

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