The full nonlinearized hypernetted chain (HNC) approximation is solved for a system of dipolar hard spheres. Results for structural, thermodynamic and dielectric properties are presented. Comparison with simulation and reference hypernetted chain (RHNC) approximation results shows that the HNC equation matches or even improves on the more sophisticated RHNC so far as configurational energies and dielectric properties are concerned. Nonetheless, as expected, pressures and structural properties are affected by the poor performance of the HNC approximation for highly repulsive potentials.
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Lomba et al. (1992) studied this question.