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Four‐photon coherent spectroscopy of orientational motion of H 2 O molecules in liquid water
Author(s) -
Bunkin A. F.,
Nurmatov A. A.,
Pershin S. M.,
Vigasin A. A.
Publication year - 2005
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.1291
Subject(s) - hitran , spectroscopy , raman spectroscopy , rayleigh scattering , chemistry , spectral line , molecule , absorption spectroscopy , molecular physics , photon , laser , absorption (acoustics) , phase (matter) , coherent anti stokes raman spectroscopy , analytical chemistry (journal) , atomic physics , nuclear magnetic resonance , raman scattering , optics , physics , organic chemistry , quantum mechanics , astronomy , chromatography
The unexpectedly narrow structure of Rayleigh wing spectra from 5 to 50 cm −1 was detected using four‐photon coherent laser spectroscopy. The observed features were compared with the IR water vapor absorption (from the HITRAN database) and with the spontaneous Raman spectrum in the vapor phase. The fairly good resemblance between our recorded four‐photon spectrum and the pure rotational spectra of H 2 O molecules in the gas phase allows the suggestion that a discernible proportion of water molecules may exhibit virtually free rotation in the liquid phase. Copyright © 2005 John Wiley & Sons, Ltd.