  A system of N classical Coulomb charges trapped in a harmonic potential
displays shell structure and orientational ordering. The local density profile
is well understood from theory, simulation, and experiment. Here, pair
correlations are considered for this highly inhomogeneous system for both the
fluid and ordered states. In the former, it is noted that there is a close
relationship to pair correlations in the uniform OCP. For the ordered state, it
is shown that the disordered "tiling" is closely related to the ground state
Thomson sites for a single sphere.
