Chemical lasers produced from O(3P) atom reactions. V. CO laser emissions and vibrational population distribution in the flash-initiated SO2-CFBr3 system
✍ Scribed by David S. Y. Hsu; M. C. Lin
- Publisher
- John Wiley and Sons
- Year
- 1978
- Tongue
- English
- Weight
- 847 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0538-8066
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✦ Synopsis
CO laser emission at 5 pm was detected when SO2 and CFBr3 were flash photolyzed in the vacuum ultraviolet above 165 nm. Over 40 vibrational-rotational transitions ranging from Au = 2 -1 to 14 -13, with the exception of those between 8 -7 and 11 -10, were identified.
The CO emission is believed to result from the 0 + C F reaction:
The vibrational population of the CO has been measured by means of a CO laser resonance absorption method. The CO was found to be vibrationally excited to u = 24 with a vibrational temperature of about 1.4 X IO4"K. The "surprisal analysis" of the observed CO distribution showed the possible occurrence of a minor process (presumably 0 + CFBr) that generated vibrationally colder CO. The effects of various additives on the CO emission were also examined. The addition of COz to a DZ-SOz-CFBr3-He mixture resulted in a simultaneous osciallation a t 3.6,5, and 10.6 pm due to DF, CO, and COz, respectively. Additionally, the utilization of the 0 + CF, ( n = 1,2,3) reactions as F-atom sources for HF-laser operation in flash-initiated systems were demonstrated.