COLLISION-INDUCED SCATTERING IN CO2 GAS

Carbon-dioxide gas rototranslational scattering has been measured at 2 94.5 K in the frequency range 10-1000 cm(-1) at 23 amagat. The depolar ization ratio of scattered intensities in the frequency range 10-1000 cm(-1) is recorded. The theoretical and experimental spectra in the fr equency range 10-470 cm(-1) are compared. The anisotropic double diffe rential cross section for scattered light is calculated theoretically considering first- and second-order dipole-induced dipole, first-order dipole-induced octopole, and first-order dipole-dipole-quadrupole lig ht scattering mechanisms as well as their cross contributions. (C) 199 5 American Institute of Physics.