On a singularity-free pair-polarizability anisotropy model for atomic gases

We present a collision-induced light scattering spectrum of Ne 2 and analyze it, together with an induced spectrum of Ar 2 , in terms of a model for the pair-polarizability anisotropy β of an atomic gas. This model, which is in essence a slight modification of one introduced by Ceccherini [ J. Chem....

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Bibliographic Details
Published in:The Journal of chemical physics 2006-06, Vol.124 (23), p.234303-234303-4
Main Authors: Chrysos, M., Dixneuf, S., Rachet, F.
Format: Article
Language:English
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Summary:We present a collision-induced light scattering spectrum of Ne 2 and analyze it, together with an induced spectrum of Ar 2 , in terms of a model for the pair-polarizability anisotropy β of an atomic gas. This model, which is in essence a slight modification of one introduced by Ceccherini [ J. Chem. Phys. 111 , 6316 ( 1999 ) ], is shown to describe the measured spectra much farther into the wings than does the original model. The agreement of our measurements with quantum-mechanical spectra from the most reliable, now available, ab initio computation methods for β produces evidence in support of the data and counters criticism of our experiment.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.2210478