1. Crystal spectrum of promethium 3 + in LaCl3
- Author
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John G. Conway, Wolfgang Baer, and Sumner P. Davis
- Subjects
Crystal ,chemistry ,Field (physics) ,Absorption spectroscopy ,General Physics and Astronomy ,chemistry.chemical_element ,Sigma ,Physical and Theoretical Chemistry ,Atomic physics ,Energy (signal processing) ,Promethium ,Line (formation) ,Ion - Abstract
The absorption spectrum of Pm3+ in LaCl3 was measured between 12 000 and 28 000 cm−1 for both sigma and pi polizations. Free ion crystal field energy level calculations were made and the line groups 5F1, 5F2, 5F3, 5S2, 5F4, 5F5, 3K6, 5G3, and 5G2 identified. Crystal field parameters were determined from the energy splittings in the first four line groups. Their values are B02=145 cm−1, B04=−320 cm−1, B06=−650 cm−1, and B66=450 cm−1. For these groups the exact free ion energy levels were calculated and the free ion parameters determined. Their values are F2 = 412.5 cm−1, F6 = 7.6 cm−1, and ζ = 977 cm−1.
- Published
- 1973
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