The Electrical Double Layer in WallWall Hypernetted Chain Approximation with
Department of Physics, Faculty of Science,
Australian National University,
Canberra, Australian Capital Territory, 0200, Australia.
(J. Chem. Phys. , 60786086 (1993))
The wallwall OrnsteinZernike equation is formulated for
the case of charged walls in a primitive model electrolyte.
Numerical results are presented for the modified hypernetted
chain (HNC) closure, which includes the effects of ion size and
correlations. The bare HNC gives attractions between like
charged surfaces rather too readily, but this is ameliorated by
the inclusion of the first bridge diagram. The singlet approach
is shown to be accurate in divalent electrolyte, and in the large
separation asymptotic regime. The method is less reliable in