Rototranslational collision-induced absorption and collision-induced light scattering spectra of molecular hydrogen using isotropic intermolecular potentials

Spectral lineshapes of collision-induced absorption (CIA) and collision-induced light scattering (CILS) for molecular nitrogen using isotropic intermolecular potential. New insights and perspectives

“…In previous work, we compared measurements of collisioninduced absorption (CIA) and of collision induced light scattering (CILS) spectra of molecular hydrogen with theoretical profiles that were based on the empirical new advanced interaction potential, induced dipole and higher order multipolar polarizabilities for both absorption and scattering [1]. Due to the observed agreement, for both absorption and scattering spectra for this system, we use the same treatment via the thermophysical and transport properties for molecular nitrogen to construct the parameters of the rototranslational collision-induced absorption and collisioninduced light scattering spectra using new isotropic intermolecular potential.…”

“…Collision-and interaction-induced spectroscopy [1] brings forth fundamental information on the nature of phenomena induced by intermolecular interactions [2,3]. In late years important work has been reported on various directions in this vast field.…”

New insights into collision-induced rototranslational absorption and scattering spectra of gaseous methane at different temperatures

“…For mixtures and molecular gases, the excess polarizability induced by interactions in a pair is a tensor that has anisotropy b(r) related to the anisotropic collision-induced light scattering (CILS). Recently, we showed for a few characteristic systems that the spectral properties of anisotropic interaction-induced light scattering can be calculated for the gaseous state, on the basis of classical, empirical or ab initio models of the induced anisotropy and of the intermolecular potential [21][22][23][24][25][26][27].…”

Multiproperty empirical isotropic interatomic potentials for CH4–inert gas mixtures

“…In a previous work, we compared measurements of collision-induced absorption (CIA) and of collision induced light scattering (CILS) spectra of hydrogen, inert gas mixtures and CF 4 –He gas mixtures with theoretical profiles that were based on the empirical induced dipole for CIA, induced trace and anisotropy polarizabilities for CILS, and new advanced interaction potential [1–4] . Due to the observed agreements for both spectra of absorption and scattering for these gas mixtures, we use the same treatment of transport, thermophysical properties and scattering cross-sections data for CH 4 –inert gas mixtures, to construct the parameters of the interaction potentials.…”