Title: Multiple vibrational relaxation in polyatomic gases and mixtures
Abstract: Ultrasonic dispersion measurements have been made in gaseous C2N2 and CF3CN at 294 K. Both molecules show two vibrational relaxation times. The measured values are compared with calculations based on the SSH-Tanczos quantum-mechanical theory. Calculated relaxation times are in fair agreement with experiment for vibration-translation transfer from lowest molecular modes, but the theory consistently underestimates the probability of complex intramolecular vibration-vibration transfer from upper modes. The experimental collision numbers for intramolecular vibration-vibration transfer are discussed in relation to other data available for both intramolecular and intermolecular transfers.
Publication Year: 1970
Publication Date: 1970-01-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 24
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