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X-ray spectroscopic...
X-ray spectroscopic study of chemical state in uranium carbides
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- Butorin, Sergei (författare)
- Uppsala universitet,Energimaterialens fysik
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- Bauters, Stephen (författare)
- Helmholtz Zentrum Dresden Rossendorf HZDR, Inst Resource Ecol, POB 510119, D-01314 Dresden, Germany.;Rossendorf Beamline ESRF European Synchrotron, CS40220, F-38043 Grenoble 9, France.
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- Amidani, Lucia (författare)
- Helmholtz Zentrum Dresden Rossendorf HZDR, Inst Resource Ecol, POB 510119, D-01314 Dresden, Germany.;Rossendorf Beamline ESRF European Synchrotron, CS40220, F-38043 Grenoble 9, France.
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- Beck, Aaron (författare)
- Karlsruhe Inst Technol, Inst Nucl Waste Disposal INE, PO 3640, D-76021 Karlsruhe, Germany.
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- Weiss, Stephan (författare)
- Helmholtz Zentrum Dresden Rossendorf HZDR, Inst Resource Ecol, POB 510119, D-01314 Dresden, Germany.
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- Vitova, Tonya (författare)
- Karlsruhe Inst Technol, Inst Nucl Waste Disposal INE, PO 3640, D-76021 Karlsruhe, Germany.
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- Tougait, Olivier (författare)
- Univ Lille, CNRS, Cent Lille, Univ Artois,UMR 8181,UCCS Unite Catalyse & Chim S, F-59000 Lille, France.
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(creator_code:org_t)
- International Union of Crystallography (IUCr), 2022
- 2022
- Engelska.
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Ingår i: Journal of Synchrotron Radiation. - : International Union of Crystallography (IUCr). - 0909-0495 .- 1600-5775. ; 29, s. 295-302
- Relaterad länk:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- UC and UMeC2 (Me = Fe, Zr, Mo) carbides were studied by the high-energyresolution fluorescence-detected X-ray absorption (HERFD-XAS) technique at the U M-4 and L-3 edges. Both U M-4 and L-3 HERFD-XAS reveal some differences between UMeC2 and UC; there are differences also between the M-4 and L-3 edge results for both types of carbide in terms of the spectral width and energy position. The observed differences are attributed to the consequences of the U 5f, 6d-4d(3d) hybridization in UMeC2. Calculations of the U M-4 HERFD-XAS spectra were also performed using the Anderson impurity model (AIM). Based on the analysis of the data, the 5f occupancy in the ground state of UC was estimated to be 3.05 electrons. This finding is also supported by the analysis of U N-4,N-5 XAS of UC and by the results of the AIM calculations of the U 4f X-ray photoelectron spectrum of UC.
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Nyckelord
- uranium carbides
- X-ray spectroscopy
- chemical state
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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