Crystal Field Effects in Metals

The errors made in calculations of one-electron energy levels in metals are estimated by using a potential which is spherically symmetric inside the inscribed spheres of the atomic pelyhedra and constant between these spheres. An idealized case is considered in which the true crystal potential may be regarded as the sum of the electrostatic potentials of non--overlapping ion cores and a uniform neutralizing distribution of electrons. Only body-centered and face- centered cubic lattices are considered. (J.S.R.)