Vibrational energy transfer pathways in CH₃F under weak and strong excitation conditions: A comparison

Energy transfer processes in CH₃F have been reinvestigated under high excitation conditions with and without added rare gas via a mathematical model developed as a consequence of studies under low excitation. The model can be used to describe energy transfer under high excitation conditions with the inclusion of an additional state and energy transfer pathways coupling that state to others in the model. A conclusion using this model is that population from 3ν₃ does not significantly fill ν₁/ν₄ or 2(ν₂/ν₅) even in the high excitation regime. It is also concluded that multiple photon absorption takes place under high excitation conditions.