Towards the Quantification of 5f Delocalization

By using M<sub>4,5</sub> X-ray Emission Spectroscopy (XES) in the tender X-ray regime, it is possible to quantify 5f delocalization in the actinides. Previous analyses, utilizing the Branching Ratio (BR) in the N<sub>4,5</sub> X-ray Absorption Spectroscopy (XAS), could not di...

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Bibliographic Details
Published in:Applied Sciences
Main Authors: J. G. Tobin, S. Nowak, S.-W. Yu, R. Alonso-Mori, T. Kroll, D. Nordlund, T.-C. Weng, D. Sokaras
Format: Article
Language:English
Published: MDPI AG 2020-04-01
Subjects:
actinides
uranium
electronic structure
Online Access:https://www.mdpi.com/2076-3417/10/8/2918
Description
Summary:By using M<sub>4,5</sub> X-ray Emission Spectroscopy (XES) in the tender X-ray regime, it is possible to quantify 5f delocalization in the actinides. Previous analyses, utilizing the Branching Ratio (BR) in the N<sub>4,5</sub> X-ray Absorption Spectroscopy (XAS), could not discriminate between the cases of localized n = 2 and delocalized n = 3, in uranium materials, where n is the number of 5f electrons on the U entity. Here, it is shown that, by employing the ubiquitous 6p → 3d XES as a point of normalization, the localized n = 2 and delocalized n = 3 cases can be easily distinguished and quantified.
ISSN:2076-3417

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