  The structure of a nonuniform Lennard-Jones (LJ) liquid near a hard wall is
approximated by that of a reference fluid with repulsive intermolecular forces
in a self-consistently determined external mean field incorporating the effects
of attractive forces. We calculate the reference fluid structure by first
determining the response to the slowly varying part of the field alone,
followed by the response to the harshly repulsive part. Both steps can be
carried out very accurately, as confirmed by MC simulations, and good agreement
with the structure of the full LJ fluid is found.
