Elementary reaction rate measurements at high temperatures by tunable-laser flash-absorption
Abstract
The major objective of this program is to measure thermal rate coefficients and branching ratios of elementary reactions. To perform these measurements, we have constructed an ultrahigh-purity shock tube to generate temperatures between 1000 and 5500 K. The tunable-laser flash-absorption technique is used to measure the rate of change of the concentration of species which absorb below 50,000 cm(exp -1) e.g.: OH, CH, and CH3. This technique is being extended into the vacuum-ultraviolet spectral region where we can measure atomic species (H, D, C, O, and N) and diatomic species (O2, CO, and OH).
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- March 1992
- Bibcode:
- 1992STIN...9231684H
- Keywords:
-
- Absorption Spectra;
- Chemical Reactions;
- High Temperature;
- Reaction Kinetics;
- Shock Tubes;
- Atoms;
- Hydroxyl Radicals;
- Oxygen;
- Lasers and Masers