Pressure dependence of the large-scale structure of water

We report on small-angle x-ray scattering measurements on liquid water aimed at characterizing the pressure evolution of its large-scale structure. Diffraction profiles have been fitted assuming a Lorentzian dependence on the exchanged momentum. As a result, we observe an anomalous behavior of the d...

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Bibliographic Details
Published in:The Journal of chemical physics 2009-11, Vol.131 (19), p.194502-194502-5
Main Authors: Cunsolo, A., Formisano, F., Ferrero, C., Bencivenga, F., Finet, S.
Format: Article
Language:English
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Summary:We report on small-angle x-ray scattering measurements on liquid water aimed at characterizing the pressure evolution of its large-scale structure. Diffraction profiles have been fitted assuming a Lorentzian dependence on the exchanged momentum. As a result, we observe an anomalous behavior of the diffracted intensity that tends to disappear, increasing either the pressure or the temperature. This effect is discussed in detail and imputed to the ability of hydrostatic pressure to weaken hydrogen bonds.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.3259882