Comparison of models for the absorption coefficient of liquids

Bandshape expressions for the condensed phase absorption coefficient and dielectric constant which incorporate the Lorentz and Onsager-Bottcher local field models are presented and compared with experiment for four liquid-phase infrared bands. The principal difference between the two models is the p...

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Bibliographic Details
Published inChemical physics letters Vol. 134; no. 5; pp. 428 - 432
Main Author Warner, J.W.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 13.03.1987
Elsevier Science
Subjects
Atomic and molecular physics
Exact sciences and technology
Intensities and shapes of molecular spectral lines and bands
Molecular properties and interactions with photons
Physics
Liquid state
Spectral line profile
Benzene
Saturated aliphatic compound
Theoretical study
Benzenic compound
Infrared spectrum
Absorptance
Permittivity
Organic compounds
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Summary:Bandshape expressions for the condensed phase absorption coefficient and dielectric constant which incorporate the Lorentz and Onsager-Bottcher local field models are presented and compared with experiment for four liquid-phase infrared bands. The principal difference between the two models is the predicted value for the integrated absorptivity. While this quantity varies by up to 10% between the two models, differences of the same magnitude occur within each model when fit to both the real and imaginary components of the dielectric constant.
ISSN:0009-2614
1873-4448
DOI:10.1016/0009-2614(87)87167-1