High Resolution Spectra of Rare Earth Crystals.
Final rept. 2 Oct 69-30 Sep 73,
JOHNS HOPKINS UNIV BALTIMORE MD
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Energy levels derived from the spectra of triply-ionized rare earths in hexagonal lanthanum trichloride single crystals have been reinterpreted using an expanded Hamiltonian including two- and three-body electrostatic and two-body magnetic effective operators in the free-ion part, and two-body crystal field operators added to the crystal interaction part. A method has been developed for dealing with the very large matrix dimensions encountered for ions in the middle of the series.
- Atomic and Molecular Physics and Spectroscopy