Abstract
Asymptotic relations based on fluctuation theory predict that in dilute near-critical systems the solute-solute pair correlation function always decays to its bulk value from above. Integral equations are ideally suited for studying dilute systems, though not arbitrarily close to criticality. Calculations on Lennard-Jones attractive binaries show large first peaks in the solute-solute pair correlation function, the effect being more pronounced at sub-critical density. A molecular dynamics study of solute-solute collisions in a binary Lennard-Jones system shows no enhancements in the collision rate at near-critical conditions, contrary to recent suggestions.
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Debenedetti, P.G. (1994). Solute-Solute Interactions: Theory and Simulations. In: Kiran, E., Sengers, J.M.H.L. (eds) Supercritical Fluids. NATO ASI Series, vol 273. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-8295-7_17
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DOI: https://doi.org/10.1007/978-94-015-8295-7_17
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