Electronic Resource
College Park, Md.
:
American Institute of Physics (AIP)
The Journal of Chemical Physics
89 (1988), S. 156-159
ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
The density dependence of the intensity of the CO2 Raman forbidden ν2 band (667.3 cm−1 ) has been studied in the CO2 –Ar and CO2 –Xe mixtures at 40 and 80 °C. The experimental results show that the band intensity increases linearly with density from 0.057 to 0.166 mol/cm3 which indicates that two-particle collisions dominate the scattering process. The intensity of the ν2 band is higher in the CO2 –Xe mixture than that in the CO2 –Ar mixture, and the experimental intensity ratio for the two mixtures is 2.2±0.2. The very good agreement between the experimental intensity ratio and the ratio calculated theoretically for the dipole–quadrupole (Aα) contribution to the collision induced scattering indicates that the Aα mechanism is responsible for the appearance of the forbidden band.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.455498
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