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Issue 40, 2017
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Ultrafast X-ray absorption study of longitudinal–transverse phonon coupling in electrolyte aqueous solution

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Abstract

Ultrafast X-ray absorption spectroscopy is applied to study the conversion of longitudinal to transverse phonons in aqueous solution. Permanganate solutes serve as X-ray probe molecules that permit the measurement of the conversion of 13.5 GHz, longitudinal phonons to 27 GHz, transverse phonons that propagate with high-frequency sound speed. The experimental results, combined with QM/MM MD simulations, show that the hydrogen bond network around the charged solutes has a glass-like stiffness that persists for at least tens of picoseconds.

Graphical abstract: Ultrafast X-ray absorption study of longitudinal–transverse phonon coupling in electrolyte aqueous solution

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Publication details

The article was received on 05 May 2017, accepted on 25 Sep 2017 and first published on 25 Sep 2017


Article type: Paper
DOI: 10.1039/C7CP02978K
Citation: Phys. Chem. Chem. Phys., 2017,19, 27266-27274
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    Ultrafast X-ray absorption study of longitudinal–transverse phonon coupling in electrolyte aqueous solution

    Y. Jiao, B. W. Adams, A. O. Dohn, K. B. Møller, H. Jónsson and C. Rose-Petruck, Phys. Chem. Chem. Phys., 2017, 19, 27266
    DOI: 10.1039/C7CP02978K

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