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Title: Separate measurement of the 5f 5/2 and 5f 7/2 unoccupied density of states of UO 2

Abstract

Coupling High Energy Resolution Fluorescence Detection (HERFD) with electric dipole selection rules, the uranium 5f 5/2 and 5f 7/2 Unoccupied Densities of States (UDOS) have been determined in UF 4, UO 2 and UCd 11. Striking changes were observed between UF 4 (5f 2) to UCd 11 (5f 3), consistent with the Intermediate Coupling Model. Results for UO 2 were confirmed by Bremstrahlung Isochromat Spectroscopy (BIS). Conclusively, this new approach can be a powerful tool for shedding light on the hidden mysteries of Actinides 5f-electrons properties.

Authors:
 [1];  [2];  [3];  [4];  [5];  [2];  [2];  [2];  [2];  [2]
  1. Univ. of Wisconsin-Oshkosh, Oshkosh, WI (United States)
  2. SLAC National Accelerator Lab. (SLAC), Menlo Park, CA (United States)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  5. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab. (SLAC), Menlo Park, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1502814
Alternate Identifier(s):
OSTI ID: 1510768
Grant/Contract Number:  
AC02-76SF00515; AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Electron Spectroscopy and Related Phenomena
Additional Journal Information:
Journal Volume: 232; Journal Issue: C; Journal ID: ISSN 0368-2048
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 47 OTHER INSTRUMENTATION; X-ray emission; Uranium dioxide; 5f electronic structure

Citation Formats

Tobin, J. G., Nowak, S., Booth, C. H., Bauer, E. D., Yu, S. -W., Alonso-Mori, R., Kroll, T., Nordlund, D., Weng, T. -C., and Sokaras, D. Separate measurement of the 5f5/2 and 5f7/2 unoccupied density of states of UO2. United States: N. p., 2019. Web. doi:10.1016/j.elspec.2019.03.003.
Tobin, J. G., Nowak, S., Booth, C. H., Bauer, E. D., Yu, S. -W., Alonso-Mori, R., Kroll, T., Nordlund, D., Weng, T. -C., & Sokaras, D. Separate measurement of the 5f5/2 and 5f7/2 unoccupied density of states of UO2. United States. doi:10.1016/j.elspec.2019.03.003.
Tobin, J. G., Nowak, S., Booth, C. H., Bauer, E. D., Yu, S. -W., Alonso-Mori, R., Kroll, T., Nordlund, D., Weng, T. -C., and Sokaras, D. Sat . "Separate measurement of the 5f5/2 and 5f7/2 unoccupied density of states of UO2". United States. doi:10.1016/j.elspec.2019.03.003.
@article{osti_1502814,
title = {Separate measurement of the 5f5/2 and 5f7/2 unoccupied density of states of UO2},
author = {Tobin, J. G. and Nowak, S. and Booth, C. H. and Bauer, E. D. and Yu, S. -W. and Alonso-Mori, R. and Kroll, T. and Nordlund, D. and Weng, T. -C. and Sokaras, D.},
abstractNote = {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). Conclusively, this new approach can be a powerful tool for shedding light on the hidden mysteries of Actinides 5f-electrons properties.},
doi = {10.1016/j.elspec.2019.03.003},
journal = {Journal of Electron Spectroscopy and Related Phenomena},
number = C,
volume = 232,
place = {United States},
year = {2019},
month = {3}
}

Journal Article:
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This content will become publicly available on March 16, 2020
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