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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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
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/10/8/2918
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author J. G. Tobin
S. Nowak
S.-W. Yu
R. Alonso-Mori
T. Kroll
D. Nordlund
T.-C. Weng
D. Sokaras
author_facet J. G. Tobin
S. Nowak
S.-W. Yu
R. Alonso-Mori
T. Kroll
D. Nordlund
T.-C. Weng
D. Sokaras
author_sort J. G. Tobin
collection DOAJ
description 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.
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spelling doaj.art-31ec12e2deff41b58a345ba2e9ab03fd2023-11-19T22:29:12ZengMDPI AGApplied Sciences2076-34172020-04-01108291810.3390/app10082918Towards the Quantification of 5f DelocalizationJ. G. Tobin0S. Nowak1S.-W. Yu2R. Alonso-Mori3T. Kroll4D. Nordlund5T.-C. Weng6D. Sokaras7Departments of Physics and Chemistry, University of Wisconsin-Oshkosh, Oshkosh, WI 54901, USASLAC National Accelerator Laboratory, Menlo Park, CA 94025, USALawrence Livermore National Laboratory, Livermore, CA 94550, USASLAC National Accelerator Laboratory, Menlo Park, CA 94025, USASLAC National Accelerator Laboratory, Menlo Park, CA 94025, USASLAC National Accelerator Laboratory, Menlo Park, CA 94025, USASLAC National Accelerator Laboratory, Menlo Park, CA 94025, USASLAC National Accelerator Laboratory, Menlo Park, CA 94025, USABy 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.https://www.mdpi.com/2076-3417/10/8/2918actinidesuraniumelectronic structure
spellingShingle J. G. Tobin
S. Nowak
S.-W. Yu
R. Alonso-Mori
T. Kroll
D. Nordlund
T.-C. Weng
D. Sokaras
Towards the Quantification of 5f Delocalization
Applied Sciences
actinides
uranium
electronic structure
title Towards the Quantification of 5f Delocalization
title_full Towards the Quantification of 5f Delocalization
title_fullStr Towards the Quantification of 5f Delocalization
title_full_unstemmed Towards the Quantification of 5f Delocalization
title_short Towards the Quantification of 5f Delocalization
title_sort towards the quantification of 5f delocalization
topic actinides
uranium
electronic structure
url https://www.mdpi.com/2076-3417/10/8/2918
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