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映射在相图上的超临界流体密度涨落动力学。

Dynamics of density fluctuation of supercritical fluid mapped on phase diagram.

作者信息

Saitow Ken-ichi, Kajiya Daisuke, Nishikawa Keiko

机构信息

Department of Physics, Faculty of Science, Chiba University, Yayoi, Inage, Chiba 263-8522, Japan.

出版信息

J Am Chem Soc. 2004 Jan 21;126(2):422-3. doi: 10.1021/ja038176z.

DOI:10.1021/ja038176z
PMID:14719912
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.

摘要

通过气液临界点附近的动态光散射研究了在中尺度上不均匀分散的极性分子的时间演化。在相图上评估的动力学产生了临界减速的等高线图,并表明一条脊线是气态和液态之间中间线的痕迹。在宽密度范围内证实了动力学与静态不均匀性之间的良好一致性,并且与理论表达式一致。

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