Vibration→Vibration and Vibration→Translation Energy Transfer in Methane-Oxygen Mixtures

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Abstract
A laser‐excited infrared fluorescence technique has been used to study vibration‐to‐vibration energy transfer from O2 to CH4 and to study vibration‐to‐translation relaxation in O2–CH4 mixtures. It is found that 440 ± 40 O2–CH4 collisions are necessary to transfer one quantum of vibrational excitation from O2 to CH4. Measurements of vibrational relaxation in NO–CH4 systems are also given.

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