Dynamics of Density Fluctuation of Supercritical Fluid Mapped on Phase Diagram

摘要

The increasing use of supercritical fluids in a wide range of practical applications has motivated a number of recent attempts to understand the fundamental aspects of fluid structure. Supercritical fluid structures are known to be very inhomogeneous, and this inhomogeneity is related to the efficiencies of chemical reactions and extraction processes. In our previous studies, we evaluated the inhomogeneity of several fluids according to density fluctuations and correlation lengths from measurements of small-angle X-ray scattering (SAXS) and thermodynamic calculations.