THE EMISSION OF VACUUM ULTRAVIOLET RADIATION FROM THE ACETYLENE-OXYGEN AND THE METHANE-OXYGEN REATIONS IN SHOCK WAVES
Abstract
The C2H2-O2 and CH4-O2 reactions were studied by observing the emission of vacuum UV radiation from shock waves in gas mixtures containing 85 to 99% Ar. In both reactions after an induction period of length t sub i, the emission intensity rises exponentially with a time constant T and then decreases about as rapidly. For the C2H2-O2 reaction, emission predominantly in the wavelength range 1500 to 1700 Angstroms was observed. It was estimated that 1 photon was emitted in this range per 30,000 C2H2 molecules passing through the reaction zone at 1840 K. The integrated emission intensity depends on the temperature as if the process producing it had an activation energy of 15 kcal/mole. For the CH4-O2 reaction, the emission intensities were an order of magnitude smaller and more strongly temperature dependent than for the C2H2-O2 reaction. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 12, 1961
- Accession Number
- AD0264700
Entities
People
- G. B. Kistiakowsky
- L. Willard Richards
Organizations
- Harvard University