Abstract
Intensity measurements of the low energy rotational Raman spectrum of CO2 are reported. In these measurements the rotational R and S branch transitions in the excited state bending mode have been resolved for the first time through the use of a supersonic expansion. Their intensities are compared to the predictions of the Placzek–Teller polarizability theory for the Raman effect. Excellent agreement is obtained between theory and experiment if account is taken of the presence of isotopic impurities in the CO2 sample.
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