Threshold kinetics of a solar-simulator-pumped iodine laser
Abstract
A model of the chemical kinetics of the n-C3F7I solar-simulator-pumped iodine laser is utilized to study the major kinetic processes associated with the threshold behavior of this experimental system. Excited-state diffusion to the cell wall is the dominant limiting factor below 5 torr. Excited-state diffusion to the cell wall is the dominant limiting factor below 5 torr. Excited-state recombination with the alkyl radical and quenching by the parent gas control threshold at higher pressures. Treatment of the hyperfine splitting and uncertainty in the pressure broadening are important factors in fixing the threshold level. In spite of scatter in the experimental data caused by instabilities in the simulator high-pressure high-pressure arc, reasonable agreement is achieved between the model and experiment. Model parameters arrived at are within the uncertainty range of values found in the literature.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- February 1984
- Bibcode:
- 1984STIN...8417575W
- Keywords:
-
- Iodine Lasers;
- Laser Outputs;
- Laser Pumping;
- Reaction Kinetics;
- Solar Simulators;
- Energy Levels;
- Line Spectra;
- Molecules;
- Photolysis;
- Quenching (Atomic Physics);
- Reaction Products;
- Lasers and Masers