The static structure factor for fully aligned charged rod-like macromolecules

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Abstract
A calculation of the static structure factor for a system of fully aligned rod-like charged macromolecules, based on the Ornstein–Zernike equation in MSA approximation is presented. The hard core of the molecules is modeled by an ellipsoid. For very long rods this should be a good model. To obtain explicit results, for the long-ranged interaction potential a superposition of screened Coulomb potentials is chosen, although the theory is applicable for any long-ranged interaction potential. The full Ornstein–Zernike equation is reduced to a set of one-dimensional Ornstein–Zernike equations, which are coupled through their closure relations. This feature makes it necessary to obtain the structure factor by a numerical procedure.

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