Abstract
By using the third-order Douglas-Kroll method and spin–orbit multiconfiguration quasidegenerate perturbation theory we have been able to predict the spectrum of odd parity states of uranium atom within at worst 1000–2000 cm−1 accuracy for the 48 states presented. For UF we have given Morse potential parameters for the lowest 18 Ω states. The ground state was found to be I9/24. The importance of dynamic correlation effects including core correlation treated on the same footing with spin–orbit coupling is elucidated.
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