Water-Water Correlations in Electrolyte Solutions Probed by Hyper-Rayleigh Scattering

Document Type

Article

Publication Date

1-1-2017

Publication Title

Journal of Chemical Physics

Volume

147

Issue

21

Abstract

Long-range ion-induced correlations between water molecules have been observed by second-harmonic or hyper-Rayleigh scattering experiments with conflicting results. The most recent work observed a large difference between the results for H2O and D2O, and large discrepancies with the previously proposed theory. However, the present observations are in quantitative agreement with the model where the ion electric field induces second harmonic generation by the water molecules, and ion-ion correlations given by the Debye-Huckel theory account for intensity saturation at high ion concentration. This work compares experimental results with theory and addresses the apparent discrepancies with previous experiments. © 2017 Author(s).

Language

english

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