Collision-induced light scattering (CILS) and collision-induced absorption (CIA) spectra for monatomic rare gas mixtures

Abstract

The isotropic and anisotropic collision-induced light scattering (CILS) for gaseous binary mixtures of neon with argon and krypton with xenon are computed using pair polarizabilities trace and anisotropy as input. Also the line shapes of collision-induced absorption (CIA) at different temperatures are determined using theoretical induced dipole moment and interatomic potential. Comparison with measured scattering and absorption spectra and literature shows a good agreement, despite the uncertainty about spectral moments. Good agreement between computed and experimental line shapes of scattering and absorption is also obtained when potential models which are constructed from the thermo-physical and transport properties are used.