Accession Number : AD0282484

Title :   A STUDY ON OXYGEN-WATER VAPOR MIXTURES UNDER RF EXCITATION BY ELECTRON-PARAMAGNETIC RESONANCE TECHNIQUES

Corporate Author : ARMY ORDNANCE MISSILE COMMAND REDSTONE ARSENAL ALA

Personal Author(s) : HOWGATE,D.W.

Report Date : FEB 1962

Pagination or Media Count : 1

Abstract : Applicability of the paramagnetic resonance technique to analyze combustion products of fuel mixtures ignited by RF discharge were studied. To te t the underlying assumptions, water vapor and oxygen mixtures were analyzed at first. Qualitative as well as quantitative determination of atomic H atomic O molecular O2, and OH radical was obtained from the EPR spectrum. Specifically, upon application of RF discharge on mixtures of water v por (partial pres ur , 50 to 200 microns) and O (partial pressure, 0 to 300 microns) the following informatio was obtained: the abs nc of t e OH species below 100 microns wat r vapor pre ure, and of the O species above 130 microns water vapor pressure; the lack of dependence of these cutoff pressures on he amount of O added to the water vapor previous to the discharge; the enhancement of the OH radical up to 5 times upon addition of sufficient O to the mixture; and the existence of the OH radical in a total concentration of less than 1% when observed. These results indicate hat the extension of the paramagnetic resonance technique to measure the combustion produc s of fuel mixtures igni ed by RF is feasible. Detection of atomic N, CH3, and other radicals by this technique is also possible. (Author)

Descriptors :   *OXYGEN, *WATER VAPOR, CHEMICAL REACTIONS, ELECTRIC DISCHARGES, ELECTRONS, EXCITATION, HYDROXIDES, MATHEMATICAL ANALYSIS, MEASUREMENT, MICROWAVE SPECTROSCOPY, RADIOFREQUENCY, SPECTROGRAPHIC ANALYSIS, TEST METHODS, THEORY

Distribution Statement : APPROVED FOR PUBLIC RELEASE