Temperature dependence of vibrational relaxation in the HF, DF, HF–CO2, and DF–CO2 systems
- 1 February 1974
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 60 (3) , 1026-1035
- https://doi.org/10.1063/1.1681110
Abstract
The laser excited fluorescence method has been employed to determine rate constants for V → V, R and V → R, T relaxation HF(ν = 1) and DF(ν = 1) by CO2 over the temperature range from 295 to 670°K. The self‐deactivation rates for HF(ν = 1) and DF(ν = 1) by ground state molecules and the rate of V → V, R transfer from HF(ν = 1) and DF(ν = 1) to the CO2 (00°1) state exhibit a marked decrease with increasing temperature. The results provide additional evidence for the conversion of the large vibrational energy defects of the present systems into rotational motion of the hydrogen halide under the influence of a sizable attractive intermolecular potential well.Keywords
This publication has 29 references indexed in Scilit:
- Vibrational relaxation in the HF–HCl,HF–HBr,HF–HI, and HF–DF systemsThe Journal of Chemical Physics, 1973
- Temperature dependence of V-V and V-R, T energy transfer measurements in mixtures containing HFThe Journal of Chemical Physics, 1973
- Vibrational relaxation of HF and DFThe Journal of Chemical Physics, 1973
- Calculation of vibrational and rotational energy transfer between HF, DF, HCl, and CO2The Journal of Chemical Physics, 1973
- Shock tube study of DF vibrational relaxationThe Journal of Chemical Physics, 1973
- Quenching of Infrared Chemiluminescence: Rates of Energy Transfer from HF (v ≤ 5) to CO2 and HF, and from DF (v ≤ 3) to CO2 and HFThe Journal of Chemical Physics, 1972
- Temperature Dependence of Nearly Resonant Vibration → Vibration Energy Transfer in CO2 MixturesThe Journal of Chemical Physics, 1972
- Shock-Tube Studies of HF Vibrational RelaxationThe Journal of Chemical Physics, 1971
- Theoretical Model for the Differential Quenching Rates of CO Fluorescence by Ortho- and ParahydrogenThe Journal of Chemical Physics, 1971
- Excitation of Molecular Vibration on Collision. I. Preferential Orientations for Vibrational TransitionsThe Journal of Chemical Physics, 1968