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Article dans une revue

Isotropic and anisotropic collision-induced Raman scattering by monoatomic gas mixtures: Ne-Ar

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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https://hal.univ-angers.fr/hal-03420371
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Soumis le : mardi 9 novembre 2021 - 10:36:48
Dernière modification le : mercredi 10 novembre 2021 - 04:07:12

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Sophie Dixneuf, Michel Chrysos, Florent Rachet. Isotropic and anisotropic collision-induced Raman scattering by monoatomic gas mixtures: Ne-Ar. Physical Review A, American Physical Society, 2009, 80 (2), Non spécifié. ⟨10.1103/PhysRevA.80.022703⟩. ⟨hal-03420371⟩

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