Abstract
Rydberg states of He of the configuration $(1s nl)^{1,3}D$, $^{1,3}F$ for $n=3\ensuremath{-}7$ have been calculated using polarized-orbital and related approximations, notably the extended-polarization approximation. The singlet states are superior in the full polarized-orbital approximation whereas the triplet cases are better in the extended-polarization approximation. Reasons for this behavior are given. Comparison is also made with recent diagrammatic calculations of Chang and Poe. A comment on some recent polarized-orbital calculations of photoionization is included.
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