Vibrational energy transfer rates for the CO–CH4, CO–CF4, and CO–SF6 systems

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Abstract
The vibrational fluorescence quenching method has been used to measure the temperature dependence of the CO(v = 1) collisional transfer rates with CH4, CF4, and SF6 between 100 and 350 K. The V–V energy transfer rates for the CO–CF4 system were found to be much faster than the CO–CH4 system even though the fundamental band center energy mismatch is greater for CO–CF4. Also, the CO–CF4 system exhibited an inverse temperature dependence, indicating near resonant processes possibly arising from a multiple quantum exchange.