Photochemical Generation of the Optoacoustic Effect: An Acoustic Analogue of the Method of Intermittent Activation

Article abstract of DOI:10.1021/j100277a001

When a mixture of H2 and Cl2 is irradiated with 488-nm radiation, the evolution of heat in the gas is governed by the rate of chain reaction.The optoacoustic effect, produced by modulating the amplitude of the radiation and recording the resulting acoustic signal, thus acts as a monitor of the chemical reaction rate in a manner analogous to the technique of intermittent activation.NO is shown to act as a potent inhibitor of the H2-Cl2 reaction by rapid reaction with Cl radicals.