title: Development of a method for measuring the density of liquid sulfur at high pressures using the falling-sphere technique.
abstract: We describe a new method for the in situ measurement of the density of a liquid at high pressure and high temperature using the falling-sphere technique. Combining synchrotron radiation X-ray radiography with a large-volume press, the newly developed falling-sphere method enables the determination of the density of a liquid at high pressure and high temperature based on Stokes' flow law. We applied this method to liquid sulfur and successfully obtained the density at pressures up to 9 GPa. Our method could be used for the determination of the densities of other liquid materials at higher static pressures than are currently possible.
authors.affiliation: Japan Synchrotron Radiation Research Institute, Sayo-cho, Hyogo 679-5198, Japan.
authors.forename: Ken-ichi
authors.initials: K
authors.lastname: Funakoshi
authors.forename: Akifumi
authors.initials: A
authors.lastname: Nozawa