Abstract
The first well-resolved, high-resolution d–f emission spectra are reported for a lanthanide ion. Numerous transitions are observed and assigned for Pr 3+ at a crystal site of octahedral symmetry. The symmetry representation of the lowest f 1d 1 state is deduced and the eigenvectors from the 4f 15d 1 energy level fit are utilized to model the experimentally observed intensities.
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