Isotropic and anisotropic collision-induced Raman scattering by monoatomic gas mixtures: Ne-Ar
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Date
2009
Authors
Dixneuf, Sophie
Chrysos, M.
Rachet, F.
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Publisher
American Physical Society
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Abstract
We report the long-overdue collision-induced Raman scattering spectrum by a pair of unlike rare gas atoms. Absolute-unit scattering intensities, both isotropic and anisotropic, are given for Ne-Ar, along with the depolarization ratio for this system, recorded by a gaseous room-temperature mixture over a wide range of frequency shift. We make a critical comparison with spectra computed quantum-mechanically on the basis of modern pair-polarizability representations for Ne-Ar, of either ab initio or density functional theory methods. We report a value for the Kerr second virial coefficient, deduced from our measurements. Our data are especially intended to add to the vital yet hitherto incomplete knowledge of the role of collision-induced processes in atmospheric environments.
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Keywords
Induced light scattering , Ab initio calculation , Correlated molecular calculations , 2nd virial coefficients , Electric properties , Rare gases , Argon
Citation
Dixneuf, S., Chrysos, M. and Rachet, F. (2009) 'Isotropic and anisotropic collision-induced Raman scattering by monoatomic gas mixtures: Ne-Ar', Physical Review A, 80(2), 022703. (8pp). doi: 10.1103/PhysRevA.80.022703
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© 2009, American Physical Society