Inelastic neutron scattering study of water in the sub- and supercritical region

C. H. Uffindell, A. I. Kolesnikov, J. C. Li, J. Mayers

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Abstract

Inelastic neutron scattering (INS) measurements have been carried out on water in the sub- and supercritical region. The results were compared to estimated values of the kinetic energy of a hydrogen atom in a water molecule in the gas and liquid states. The increase in kinetic energy with temperature was found to be more than expected from the harmonic approximation. It is concluded that about half of the hydrogen bonds in water with density of ρ = 0.85 g/cm3 are broken at 400 °C. The results also suggest a further decrease in the number of hydrogen bonds on decreasing the density at 400 °C.

Original languageEnglish
Pages (from-to)444-445
Number of pages2
JournalPhysica B: Physics of Condensed Matter
Volume276-278
DOIs
StatePublished - Mar 2000
Externally publishedYes
Event2nd European Conference on Neutron Scattering (ECNS '99) - Budapest, Hung
Duration: Sep 1 1999Sep 4 1999

Funding

The authors would like to thank Mr. J.W. Dreyer (ISIS) for technical assistance during experiments. They would also like to thank EPSRC for financial support and ISIS for provision of neutron beam facilities.

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