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On far‐wing Raman profiles by CO 2
Author(s) -
Benec'h S.,
Rachet F.,
Chrysos M.,
Buldyreva J.,
Bonamy L.
Publication year - 2002
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.944
Subject(s) - wing , anisotropy , raman scattering , scattering , raman spectroscopy , spectrum (functional analysis) , physics , molecular physics , optics , computational physics , quantum mechanics , thermodynamics
The anisotropic scattering spectrum of the symmetric stretching ν 1 band by CO 2 was recorded up to the far Stokes wing, and its theoretical analysis was attempted through the non‐Markovian energy‐corrected sudden approximation—a useful approach which has thus far been successfully applied to the anisotropic scattering spectrum by N 2 , up to the far wing. Despite the excellent agreement observed in N 2 here, a substantial inconsistency between theory and experiment was found in the wing of the spectrum. Although the influence of other missing processes or neighboring bands cannot be totally excluded, our findings rather suggest that highly anisotropic perturbers, such as CO 2 , are improperly described when they are handled as point‐like molecules, a cornerstone hypothesis in the approach employed. Copyright © 2002 John Wiley & Sons, Ltd.