Ornstein-Zernike correlation length

The correlation length of the polymer solution can be estimated in the static light scattering. Here, we use the Ornstein-Zernike correlation function goz(r) to find f experimentally. This correlation function is often used for the correlation (Ap(r)Ap(O))/p of the density fluctuation Ap(r) = p(r) — (p) in the semidilute polymer solution. The function is expressed as... 

It is the purpose of this chapter to sketch a statistical approach of wave-number-dependent fluctuations within the background of the STL, which goes beyond the correlation length concept, by incorporating in particular high order moments of the pair direct correlation function, at the level of description of molecular liquids. This approach permits one to unify the Teubner-Strey (TS) approach of microemulsions (Teubner and Strey 1987) to the usual Ornstein-Zernike approach of molecular emulsions in general. 

The correlation length ( was measured with the aid of Ornstein-Zernike-Debye s plots (cf. Equation 89) ... 

At high temperatures (i.e., in the one-phase region of the liquid mixture) the scattering of the pore liquid is described by an Ornstein-Zernike term, 7(g) (1 + g c) a correlation length characterizing the compo-... 

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