- Author
-
Tjossem, P. J. H.
|
Smyth, K. C.
- Title
- Multiphoton Ionization Detection of CH, Carbon Atoms, and O2 in Premixed Hydrocarbon Flames.
- Coporate
- National Bureau of Standards, Gaithersburg, MD
- Journal
-
Chemical Physics Letters,
Vol. 144,
No. 1,
51-57,
February 12, 1988
- Keywords
-
flame research
|
premixed flames
|
hydrocarbons
- Abstract
- Measurements of the multiphoton ionization (MPI) spectra of CH, C atoms, and O2 have been made in atmospheric-pressure CH4/air and C2H4/air flames in the 280-315 nm region. The transitions involved are [equation] and [equation], for CH, the [equation] and [equation] multiplets for carbon atoms, and [equation] for )2. Unusual rotational line intensities are observed in the CH spectra, which double resonance experiments show arise from near resonance with the intermediate [equation] state. The MPI spectrum of O2 is much more intense in flames compared to room-temperature, atmospheric-pressure conditions.