Semi-empirical predictions of even atomic energy levels and their hyperfine structure for the scandium atom

We report fine and hyperfine structure analysis of the system of even configurations of the Sc atom in a large multi-configuration basis. The complete energy scheme in the energy region up to about 50,000 cm−1 has been established with the predicted values of the hyperfine structure constants A. The effects of the configuration interaction in the fine and hyperfine structure are discussed.