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Inne
Spectrum analysis, correlation crystal-field effects and f - f transition intensities of U3+ in LaCl3.
Autorzy
Rok wydania
2002
Czasopismo
Numer woluminu
117
Strony
2800-2808
DOI
10.1063/1.1482372
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
High resolution polarized absorption spectra of U31: LaCl3single crystals were recorded in the4000– 50 000 cm21range at 7 K. The experimental crystal-field energy levels of the U31ion werefitted to a semiempirical Hamiltonian employing free-ion, one-electron crystal-field as well astwo-particle correlation crystal-field~CCF!operators. The performed analysis of the spectra enabledthe determination of crystal-field parameters and reassignment of some of the observed 5f3!5f3transitions. The effects of selected CCF operators on the splitting of some specific U31multiplets have been investigated. On the basis of the obtained electronic wave functions theelectric-dipole intensity parameters of the total transition dipole strength were determined by fittingthe calculated and experimental transition intensities. Among 67 transitions observed in the4000– 22 000 cm21range 56 were sufficiently well resolved for quantitative calculations.
Adres publiczny
https://doi.org/10.1063/1.1482372
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