Abstract
Neutron scattering permits the study of transitions within and between Russell-Saunders multiplets. Applied to rare-earth and actinide metals and compounds the technique provides information that is not obtained with other experimental probes. For such materials, scattering from an isolated ion is a good guide for the interpretation of data. Selection rules for this model are discussed. These are different in a relativistic treatment of atomic electron states. Earlier work on this topic by Stassis and Deckman (1976) is clarified.

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