Light Scattering and Sum Rules in Three Phases of a Liquid Mixture near Its Tricritical Point

M. W. Kim; W. I. Goldburg; P. Esfandiari; J. M. H. Levelt Sengers; E. -S. Wu

doi:10.1103/PhysRevLett.44.80

Light Scattering and Sum Rules in Three Phases of a Liquid Mixture near Its Tricritical Point

M. W. Kim, W. I. Goldburg, P. Esfandiari, J. M. H. Levelt Sengers, and E. -S. Wu

Phys. Rev. Lett. 44, 80 – Published 14 January 1980

Abstract

Measurements of light-scattering intensity and correlation lengths in all three coexisting phases in the mixture water + benzene + ethanol + ammonium sulfate are reported for temperatures near the tricritical point. A comparison with two sum rules predicted by a classical theory shows fairly good agreement in one case and significant deviations in the other. Possible explanations of the latter are discussed.

Received 24 August 1979

DOI:https://doi.org/10.1103/PhysRevLett.44.80

Authors & Affiliations

M. W. Kim^* and W. I. Goldburg

Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260

P. Esfandiari^† and J. M. H. Levelt Sengers

Thermophysics Division, National Bureau of Standards, Washington, D.C. 20234

E. -S. Wu

Physics Department, University of Maryland, Baltimore Campus, Baltimore, Maryland 21228

^*Present address: Exxon Research and Engineering Co., P.O. Box 45, Linden, N.J. 07036.
^†Present address: Dynatherm Corporation, Marble Court (off Industry Lane), Cockeysville, Md.