O(1S) interactions—the product channels

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Abstract
The first measurements are reported of the reaction pathways for the interaction between oxygen atoms in the 4.19 eV 1S state, and four molecules, N2O, CO2, H2O, and NO. Distinction is made between three possible paths—quenching to O(1D), quenching to O(3P), and chemical reaction. With N2O, the most reasonable interpretation of the data indicates that there is no reaction, in sharp contrast with the interaction between O(1D) and N2O, which proceeds entirely by reaction. Similarly, there is no reaction with CO2. With H2O, the reactive pathway is the dominant one, although electronic quenching is not negligible. With NO, O(1D) is the preferred product.

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