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http://publications.jrc.ec.europa.eu/repository/handle/JRC59526| Title: | High energy resolution X-ray absorption spectroscopy study of uranium in varying valence states |
| Authors: | VITOVA T.; KVASHNINA Kristina; NOCTON G.; SUKHARINA G.; DENECKE M. A.; BUTORIN S. M.; MAZZANTI M.; CACIUFFO Roberto; SOLDATOV A.; BEHRENDS T.; GECKEIS Horst |
| Citation: | PHYSICAL REVIEW B no. 82 p. 235118 (1-6) |
| Publisher: | AMER PHYSICAL SOC |
| Publication Year: | 2010 |
| JRC N°: | JRC59526 |
| ISSN: | 1098-0121 |
| URI: | http://publications.jrc.ec.europa.eu/repository/handle/JRC59526 |
| DOI: | 10.1103/PhysRevB.82.235118 |
| Type: | Articles in periodicals and books |
| Abstract: | High energy resolution X-ray absorption spectroscopy (XAS) study on U4+ (UO2), U5+ ([UO2Py5][KI2Py2]) and U6+ (UO2(NO3)2*(H2O)6) materials have been performed. We demonstrate the potential of this novel experimental technique for qualitative/semi qualitative and quantitative actinide speciation investigations and discuss its advantages over the standard XAS technique. For the first time a pre-edge feature in U L3 edge partial fluorescence yield X-ray absorption near edge structure (PFY-XANES) spectrum is observed and its origin explained by performing calculations with the FDMNES code based on the multiple scattering theory and the finite difference method. PACS numbers: 61.05.Cj, 78.70.Dm, 78.70.En, 71.20.-b |
| JRC Institute: | Nuclear Safety and Security |
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