Accession Number : ADA017643

Title :   Some Novel Diagnostic Techniques for Plasma Chemistry.

Descriptive Note : Technical rept.,

Corporate Author : EMORY UNIV ATLANTA GA

Personal Author(s) : Kaufman,Myron

Report Date : 15 OCT 1975

Pagination or Media Count : 31

Abstract : 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.

Descriptors :   *Reaction kinetics, *Plasmas(Physics), *Electric discharges, Mass spectrometry, Molecular beams, Gas chromatography, Free radicals, Parameters, Electromagnetic spectra

Subject Categories : Organic Chemistry
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE