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We have measured the critical exponent y characterizing the divergence of the viscosity eta |T Tc|^-y for carbon dioxide and xenon. The values of y for both fluids fall within the range y = 0.041 ± 0.001 and are consistent with the range y = 0.042 ± 0.002 spanned by our earlier data for four binary liquid mixtures. This agreement is the strongest evidence that pure fluids and binary liquids are in the same dynamic universality class; however, the results for y are inconsistent with the recent theoretical value of 0.032.
Citation
Physical Review A
Volume
42
Pub Type
Journals
Citation
Berg, R.
and Moldover, M.
(1990),
Critical exponent for viscosity, Physical Review A
(Accessed October 10, 2025)