Chemical lasers produced from O(3P) atom reactions. V. CO laser emissions and vibrational population distribution in the flash‐initiated SO2‐CFBr3 system

David S.Y. Hsu*, Ming-Chang Lin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

CO laser emission at 5 μm was detected when SO2 and CFBr3 were flash photolyzed in the vacuum ultraviolet above 165 nm. Over 40 vibrational–rotational transitions ranging from Δv = 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 O + CF reaction: (Formula Presented.) 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 v = 24 with a vibrational temperature of about 1.4 × 104°K. The “surprisal analysis” of the observed CO distribution showed the possible occurrence of a minor process (presumably O + CFBr) that generated vibrationally colder CO. The effects of various additives on the CO emission were also examined. The addition of CO2 to a D2‐SO2‐CFBr3‐He mixture resulted in a simultaneous osciallation at 3.6, 5, and 10.6 μm due to DF, CO, and CO2, respectively. Additionally, the utilization of the O + CFn (n = 1, 2, 3) reactions as F‐atom sources for HF‐laser operation in flash‐initiated systems were demonstrated.

Original languageEnglish
Pages (from-to)839-853
Number of pages15
JournalInternational Journal of Chemical Kinetics
Volume10
Issue number8
DOIs
StatePublished - Aug 1978

Fingerprint

Dive into the research topics of 'Chemical lasers produced from O(3P) atom reactions. V. CO laser emissions and vibrational population distribution in the flash‐initiated SO2‐CFBr3 system'. Together they form a unique fingerprint.

Cite this