- Author
-
Broida, H. P.
|
Kostkowski, H. J.
- Title
- Experimental Proof for the Existence of Nonthermal Rotational Distributions of OH in Flames.
- Coporate
- National Bureau of Standards, Gaithersburg, MD
- Journal
-
Journal of Chemical Physics,
Vol. 25,
No. 4,
676-680,
October 1956
- Distribution
- Available from National Technical Information Service
- Keywords
-
flame research
|
absorption
|
hydrocarbons
|
temperature
|
low pressure
|
atmospheric pressure
- Abstract
- Experiments have been carried out to determine whether nonthermal rotational distributions in the electronic state of OH observed in certain flames are caused by self-absorption. A study of emission (single and double path) and absorption by OH between 3064 A and 3350 A in atmospheric and low-pressure flames has shown that self-absorption is negligible in at least two cases in which nonthermal distributions are found. This leads to the conclusion that anomalous "temperatures" of OH measured previously in hydrocarbon flames at low pressure and in highly diluted flames at atmospheric pressure are real.