Journal
JOURNAL OF PHYSICAL CHEMISTRY A
Volume 107, Issue 40, Pages 8191-8197Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp0225626
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Collisional energy transfer from highly vibrationally excited pyrazine to CO bath molecules has been studied by use of an infrared diode laser to probe the vibrational, rotational, and translation degrees of freedom of scattered CO molecules. Here the excitation of the CO (upsilon = 1) bath molecule vibrational state is investigated after a collision with highly excited, vibrationally hot pyrazine. Only a small amount of rotational and translational excitation accompanies the production of CO (upsilon = 1), implicating a soft collision, long-range force energy transfer mechanism. The amount of CO scattered into the upsilon = 1 state at 2170 cm(-1) is small when compared to the amount of CO2 scattered into the analogous 00(0)1 level Of CO2 at 2349 cm(-1) by collisions with pyrazine molecules having 40 640 cm(-1) of internal vibrational energy.
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