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Some Novel Diagnostic Techniques for Plasma Chemistry.
EMORY UNIV ATLANTA GA
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In order to probe the mechanisms of chemical transformations in electric discharges it is most useful to monitor concentrations of reactants, products and reactive intermediates as a function of discharge parameters. Mass spectrometry, a popular technique for observing intermediates in chemical reactions, meets with particular difficulty when applied to discharges, due to the presence of excited molecules as well as free radicals in such systems. Molecular beam analysis, a synthesis of mass spectrometry with molecular beam measurements of electric and magnetic moments and velocity distributions, is a technique developed in our laboratory which offers distinct advantages for the analysis of intermediates in electric discharges. A chromatographic sampling system which employs compression in order to achieve high sensitivity has been developed and evaluated. We are also, investigating the use of discharge actinometers as means of measuring the intensity of electric discharges.
APPROVED FOR PUBLIC RELEASE