title: Pressure evolution of the high-frequency sound velocity in liquid water.
abstract: The high-frequency sound velocity v( infinity ) of liquid water has been determined to densities of 1.37 g/cm(3) by inelastic x-ray scattering. In comparison to the hydrodynamic sound velocity v(0), the increase of v( infinity ) with density is substantially less pronounced, indicating that, at high density, the hydrogen-bond network is decreasingly relevant to the physical properties of liquid water. Furthermore, we observe an anomaly in v( infinity ) at densities around 1.12 g/cm(3), contrasting the smooth density evolution of v(0).
authors.affiliation: European Synchrotron Radiation Facility, B.P. 220, F-38043 Grenoble, Cedex France.
authors.forename: M
authors.initials: M
authors.lastname: Krisch
authors.forename: P
authors.initials: P
authors.lastname: Loubeyre
authors.forename: G
authors.initials: G
authors.lastname: Ruocco
authors.forename: F
authors.initials: F
authors.lastname: Sette
authors.forename: A
authors.initials: A
authors.lastname: Cunsolo
authors.forename: M
authors.initials: M
authors.lastname: D'Astuto
authors.forename: R
authors.initials: R
authors.lastname: LeToullec
authors.forename: M
authors.initials: M
authors.lastname: Lorenzen
authors.forename: A
authors.initials: A
authors.lastname: Mermet
authors.forename: G
authors.initials: G
authors.lastname: Monaco
authors.forename: R
authors.initials: R
authors.lastname: Verbeni