Low-Frequency Raman Spectra and Correlations
of the Local Characteristics of the Surface Layer of Liquids

V. A. Zubkov

Chemistry Research Institute, St. Petersburg University, Petrodvorets, 198904 Russia

Received October 3, 1995

Abstract—The polarized and depolarized Raman spectra of the free surface of liquid chloroform were
recorded in the spectral range 5–120 cm–1 for scattering vectors 160–4050 cm–1. The surface layer is character-
ized by an isolated Raman band at 30–55 cm–1. The band shapes are substantially different for the polarized
and depolarized components. The experimental spectra are well described by the model relating the spectral
density of scattered radiation to the principal modes of the dynamic part of the excess structure factor of the
surface layer.


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