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  Anharmonic Coupling between Intermolecular Motions of Water Revealed by Terahertz Kerr Effect

Kampfrath, T., Wolf, M., & Sajadi, M. (in preparation). Anharmonic Coupling between Intermolecular Motions of Water Revealed by Terahertz Kerr Effect.

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1707.07622.pdf (Preprint), 2MB
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File downloaded from arXiv at 2018-08-29 10:14
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 Creators:
Kampfrath, Tobias1, Author           
Wolf, Martin1, Author           
Sajadi, Mohsen1, Author           
Affiliations:
1Physical Chemistry, Fritz Haber Institute, Max Planck Society, ou_634546              

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Free keywords: Condensed Matter, Soft Condensed Matter, cond-mat.soft
 Abstract: Formation of local molecular structures in liquid water is believed to have marked effect on the bulk properties of water, however, resolving such structural motives in an experiment is challenging. This challenge might be handled if the relevant low-frequency structural motion of the liquid is directly driven with an intense electromagnetic pulse. Here, we resonantly excite diffusive reorientational motions in water with intense terahertz pulses and measure the resulting transient optical birefringence. The observed response is shown to arise from a particular configuration, namely the restricted trans-lational motion of water molecules whose motions are predominantly orthogonal to the dipole moment of the excited neighboring water molecules. Accordingly, we estimate the strength of the anharmonic coupling between the rotational and the restricted translational degrees of freedom of water.

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Language(s): eng - English
 Dates: 2017-07-24
 Publication Status: Not specified
 Pages: 8
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: arXiv: 1707.07622
URI: http://arxiv.org/abs/1707.07622
 Degree: -

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