Infrared Intensities of the Lattice Modes of Solid Carbon Dioxide

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Abstract
The integrated infrared intensities of the two translational lattice modes of solid CO2 at 114 and 68 cm−1 were measured using the Beer–Lambert law and found to be 40 ± 3 and 26 ± 4 darks, respectively. Calculated intensities, determined by considering quadrupole–induced dipole transitions, have been reported and are compared with these results. It is found that even though the calculated intensities differ significantly from their experimental values, their sum is in good agreement with the sum of the intensities measured here.

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