Structure and thermodynamics of multi-component/multi-Yukawa mixtures

Details Structure and thermodynamics of multi-component/multi-Yukawa mixtures Structure and thermodynamics of multi-component/multi-Yukawa mixtures

2006-02-21

arxiv.org/abs/cond-mat/0602477v2

Physics

Condensed Matter

Statistical Mechanics

16 pages

Scientific paper

10.1088/0953-8984/18/36/S16

New small angle scattering experiments reveal new peaks in colloidal systems (S.H. Chen et al) in the structure function S(k), in a region that was inaccessible with older instruments. We propose here general closure of the Ornstein Zernike equation, that is the sum of an arbitrary number of yukawas, and that that will go well beyond the MSA . For this closure we get for the Laplace transform of the pair correlation function . This function is easily transformed into S(k) by replacing the Laplace variable by the Fourier wariable. Although the method is general and valid for polydisperse systems, an explicit continued fraction solution is found for the monodisperse case.

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