The Influence of the Chemical State on K x-RayIntensities
Open Access
- 1 October 1984
- journal article
- research article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung A
- Vol. 39 (10) , 924-929
- https://doi.org/10.1515/zna-1984-1002
Abstract
The x-ray intensities of the Kβ and KO lines relative to the Kα1, transition were measured with high accuracy for the pairs La2O3-La, SmS-Sm, Sm2O3-Sm and Ta2O5-Ta. The Kβ13 and Kβ24 lines do not show significant intensity shifts. However, the intensity of the KO line is in La2O3 (15.0 ±4.7)% higher, in SmS (6.9 ± 2.7)% lower and in Ta2O5 (12.5 ± 8.7)% higher than that emitted from the corresponding metal. These results can be reproduced by Dirac-Fock-calculations, where the KO-intensities show a typical dependence on the quantum numbers of the valence electrons. The observed shifts indicate a 4f-5d hybridization or promotion in metallic Lanthanum and suggest the missing of a 4f electron in metallic Samarium compared to the free atom.Keywords
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