Rotational and collisional contributions in the Rayleigh and Raman spectra of fluid N2

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Abstract
Rotational and rotovibrational spectra of fluid N2 at T = 119 K and ρ = 570 and 625 amagatare reported. Substantial agreement is found with a recent molecular dynamics simulation which takes into account all dipole–induced-dipole effects including the cross interference term betwen permanent and induced anisotropy. A procedure is described to derive the nonrotational contribution from the experimental spectra using a rotational model spectrum based on a parametrized memory function.The derived lineshapes (collision induced plus cross term) are in agreement with molecular dynamics results.

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