Ground State of the First Spectrum of Plutonium (Pu i), from an Analysis of Its Atomic Spectrum

Data from King furnace work and hyperfine-structure and Zeeman studies on the spectra of Pu i have resulted in the derivation of three levels of the 7F term. It is suggested that this term arises from the ground-state electronic configuration 5f6 7s2 and that these levels are at 0.0 cm−1 (7F0), 2203.6 cm−1 (7F1), and 4299.6 cm−1 (7F2).