High Temperature Photochemistry (HTP): Kinetics and Mechanism Studies of Elementary Combustion Reactions over 300-1700 K

Abstract

Abstract The HTP technique makes it possible to study the kinetics and mechanisms of elementary reactions of important combustion-related free radicals over wide temperature ranges. It utilizes standard flash photolysis methods to generate the radicals and resonance fluorescence diagnostics to follow their time-dependent concentrations, from which kinetic and mechanistic information is derived. The use of a single technique to explore the kinetics of reactions over wide temperature ranges gives high confidence in the experimentally determined temperature dependences and provides a precise data base for both theoretical and empirical extrapolation of kinetic parameters to other temperatures of interest. Results obtained in HTP studies of the reactions O+CH3, H+H2O, OH+CH4, and OH+C6H6 are discussed.