- Author
-
Chandler, D. W.
|
McLean, W. J.
- Title
- New Laser Source for Radical Detection in Flames.
- Coporate
- Sandia Labs., Livermore, CA
- Report
-
WSS/CI 84-31,
1984,
18 p.
- Book or Conf
- Combustion Institute/Western States Section. Spring Meeting, 1984. April 2-3, 1984,
Boulder, CO,
1984
- Keywords
-
detection
|
lasers
|
low pressure flames
- Abstract
- A new laser source has been developed with permits detection of species which have absorption lines in the region of 410 nm to 360 nm. Some of the more interesting combustion species absorbing in this region are CN, CH, and C2. In order to determine the sensitivity and applicability of this new laser source, fluorescence excitation spectra of CN and CH were obtained in a low pressure flame where the calculated concentrations of CN are below 10 parts per million. Laser induced fluorescence (LIF) spectra were used to determine concentration profiles of these species and the temperature in the flames. From absorption spectra of CH and CN approximate values for the absolute concentrations were determined.