title: Dynamics of density fluctuation of supercritical fluid mapped on phase diagram.
abstract: A time evolution of polar molecules inhomogeneously dispersing in mesoscale is investigated by dynamic light scattering around the gas-liquid critical point. The dynamics evaluated on phase diagrams produces a contour map of critical slowing down and suggests a ridge to be a trace of intermediate lines between gas and liquid states. A good coincidence between dynamics and static inhomogeneities is confirmed in the wide density, and it is consistent with theoretical expressions.
authors.affiliation: Department of Physics, Faculty of Science, Chiba University, Yayoi, Inage, Chiba 263-8522, Japan. saitow@faculty.chiba-u.jp
authors.forename: Ken-ichi
authors.initials: K
authors.lastname: Saitow
authors.forename: Daisuke
authors.initials: D
authors.lastname: Kajiya
authors.forename: Keiko
authors.initials: K
authors.lastname: Nishikawa