Abstract
Time-resolved direct frequency comb spectroscopy was used to study the kinetics of the OD+CO→D+CO2 reaction, which is important for atmospheric and combustion chemistry. Complementing our recent work on quantifying the formation rate of the trans-DOCO radical, we report measurements of the kinetics of the chemically activated product channel, D+CO2, at room temperature. Simultaneous measurements of the time-dependence of OD and CO2 concentrations directly yield the products’ formation rate and its dependence on pressure and bath gas. Together with the trans-DOCO formation rate, these new measurements provide absolute yields of branching channels for both products of OD+CO in the low-pressure limit.
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