Spectral lineshapes of collision-induced absorption (CIA) using isotropic intermolecular potential for mixtures of molecular hydrogen with helium

Abstract

Quantum mechanical lineshapes of collision-induced absorption (CIA) at different temperatures for the collisional complex of a hydrogen molecule and a helium atom are computed using the numerical results of the induced dipole moment and isotropic intermolecular potential as input. Comparison with measured spectra and first three spectral moments shows good agreement over the rototranslational band in the far infrared. The quality of the present potentials have been checked by comparing between calculated and experimental thermo-physical and transport properties, which are found to be in good agreement.