Separate measurement of the 5f5/2 and 5f7/2 unoccupied density of states of UO2

J.G Tobin,S Nowak,C.H Booth,E.D Bauer,S.-W Yu,R Alonso-Mori,T Kroll,D Nordlund,T.-C Weng,D Sokaras

doi:10.1016/j.elspec.2019.03.003

Separate measurement of the 5f5/2 and 5f7/2 unoccupied density of states of UO2

J.G Tobin, S Nowak + Show 8 more

Open Access

https://doi.org/10.1016/j.elspec.2019.03.003

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Journal: Journal of Electron Spectroscopy and Related Phenomena	Publication Date: Mar 16, 2019
Citations: 20	License type: publisher-specific-oa

Affiliation: University of Wisconsin–Oshkosh, SLAC National Accelerator Laboratory, Stanford Synchrotron Radiation Lightsource, Lawrence Berkeley National Laboratory, Los Alamos National Laboratory, Lawrence Livermore National Laboratory

#High Energy Resolution Fluorescence Detection #Electric Dipole Selection Rules + Show 8 more

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Abstract

Coupling High Energy Resolution Fluorescence Detection (HERFD) with electric dipole selection rules, the uranium 5f5/2 and 5f7/2 Unoccupied Densities of States (UDOS) have been determined in UF4, UO2 and UCd11. Striking changes were observed between UF4 (5f2) to UCd11 (5f3), consistent with the Intermediate Coupling Model. Results for UO2 were confirmed by Bremstrahlung Isochromat Spectroscopy (BIS). This new approach can be a powerful tool for shedding light on the hidden mysteries of Actinides 5f-electrons properties.

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