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Relation between Dielectric and Low-Frequency Raman Spectra of Hydrogen-Bond Liquids

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Fukasawa, Toshiko, Sato, Takaaki, Watanabe, Junji, Hama, Yoshimasa, Kunz, Werner, Buchner, Richard·2005·Physical Review Letters

Abstract

We analyzed the complex dielectric and Raman spectra of hydrogen-bond liquids in the microwave to terahertz frequency range. As for water and methanol, the high-frequency component of the dielectric spectrum, i.e., the small deviation from the principal Debye relaxation, clearly corresponds to the Raman spectrum. This indicates that the cooperative relaxation, accompanied by huge polarization fluctuation, is virtually not Raman active, whereas the faster processes reflect common microscopic dynamics. For ethylene glycol, the shape of the Raman spectrum also resembles that of the high-frequency deviation of the dielectric spectrum, but, additionally, a weak manifestation of the cooperative relaxation arising from quadrupolar conformers is detected.

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Metadata

Authors
Fukasawa, T., Sato, T., Watanabe, J., Hama, Y., Kunz, W., & Buchner, R.
Venue
Physical Review Letters
Published
2005-11-03
Volume
95
Issue
19
Pages
197802-197802
ISSN
  • 0031-9007 (ISSN-L)
  • 1079-7114
OpenAlex
W2034425157
Cited by
352
References
0
FWCI
3.83
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Relation between Dielectric and Low-Frequency Raman Spectra of Hydrogen-Bond Liquids. https://app.cochat.ai/papers/10.1103/physrevlett.95.197802
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Fukasawa, T., Sato, T., Watanabe, J., Hama, Y., Kunz, W., & Buchner, R. (2005). Relation between Dielectric and Low-Frequency Raman Spectra of Hydrogen-Bond Liquids. Physical Review Letters. https://doi.org/10.1103/physrevlett.95.197802

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