Laser flash photolysis with real-time mass spectrometry detection

J. Codnia; Francisco Adriano Manzano; M. L. Azcarate

doi:10.1117/12.591558

21 October 2004 Laser flash photolysis with real-time mass spectrometry detection

J. Codnia, Francisco Adriano Manzano, M. L. Azcarate

Proceedings Volume 5622, 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications; (2004) https://doi.org/10.1117/12.591558
Event: 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications, 2004, Porlamar, Venezuela

Abstract

The laser flash photolysis technique in a flow system with real time mass spectrometry detection is a suitable tool monitor the time evolution of chemical reactions. IR and UV lasers have been used to generate radicals to initiate a chemical reaction in a gas mixture. The appropriate selection of the pressure regimes (μtorr - 760 torr), the laser pulse repetition rate and the sample residence time in the photoreactor make possible the selective detection of final and intermediate reaction products. The selection of the temporal scales enables the independent study of the different stages of a process through the elimination of certain radical reactions. The rate constants associated to the corresponding kinetic scheme can be therefore determined and the reaction channels can be established. This technique was implemented for the study of oxidation reactions of chlorofluorocarbons of atmospheric interest.

Citation Download Citation

J. Codnia, Francisco Adriano Manzano, and M. L. Azcarate "Laser flash photolysis with real-time mass spectrometry detection", Proc. SPIE 5622, 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications, (21 October 2004); https://doi.org/10.1117/12.591558

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