Accession Number : AD0679974

Title :   TEMPERATURE DEPENDENCE OF CHEMILUMINESCENT REACTIONS. VOLUME III: THE SULFUR DIOXIDE AFTERGLOW.

Descriptive Note : Technical rept. Dec 67-Feb 68,

Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Personal Author(s) : Cohen,Norman ; Gross,Rolf W. F.

Report Date : OCT 1968

Pagination or Media Count : 15

Abstract : The object of the glow discharge shock tube is to be able to fire a mild shock into a flowing gas that has been passed through an electrical discharge. The shock heats and compresses the gas rapidly, but not to such a high temperature that further dissociation takes place. This technique was applied to the O + SO afterglow. The SO2 afterglow continuum was produced by two independent methods: (a) passing SO2 through a microwave discharge and injecting it into a N2 stream, or (b) passing O2 through the discharge and adding OCS downstream, converting some O atoms to SO by the reaction of O with OCS. In both cases the emission intensity was of second order pressure dependence. Measurements made in different regions of the spectrum showed no wavelength dependence of the temperature exponent. Absolute emission intensity was determined in the O + OCS system at room temperature by using the O + NO afterglow for calibration. The integrated intensity from 2000 to 5000 A gave a rate constant in agreement with previous determinations. (Author)

Descriptors :   (*CHEMILUMINESCENCE, *SULFOXIDES), SHOCK TUBES, DISCHARGE TUBES, FREE RADICALS, MICROWAVES

Subject Categories : Physical Chemistry
      Radiation and Nuclear Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE