Single-Configuration Calculations on Excited States of Helium. II

The best one-configuration wavefunctions for the first 18 excited states of helium have been found. The error in the energy varies from 2% of the ionization energy for the 2s 1S state to 0.1% for the 4f 3F state. The electron-repulsion integral is consistently larger for triplet states than for singlet states, in contradiction to more näive theories.

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