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Open Access Publications from the University of California

Covalency in oxidized uranium

  • Author(s): Tobin, JG
  • Yu, S-W
  • Qiao, R
  • Yang, WL
  • Booth, CH
  • Shuh, DK
  • Duffin, AM
  • Sokaras, D
  • Nordlund, D
  • Weng, T-C
  • et al.

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© 2015 American Physical Society. ©2015 American Physical Society. Using x-ray emission spectroscopy and absorption spectroscopy, it has been possible to directly access the states in the unoccupied conduction bands that are involved with 5f and 6d covalency in oxidized uranium. By varying the oxidizing agent, the degree of 5f covalency can be manipulated and monitored, clearly and irrevocably establishing the importance of 5f covalency in the electronic structure of the key nuclear fuel, uranium dioxide.

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