Studies of Actinides Reduction on Iron Surfaces by Means ofResonant Inelastic X-ray Scattering

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The interaction of actinides with corroded iron surfaces was studied using resonant inelastic x-ray scattering (RIXS) spectroscopy at actinide 5d edges. RIXS profiles, corresponding to the f-f excitations are found to be very sensitive to the chemical states of actinides in different systems. Our results clearly indicate that U(VI) (as soluble uranyl ion) was reduced to U(IV) in the form of relatively insoluble uranium species, indicating that the iron presence significantly affects the mobility of actinides, creating reducing conditions. Also Np(V) and Pu (VI) in the ground water solution were getting reduced by the iron surface to Np(IV) and Pu ... continued below

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Kvashnina, K.O.; Butorin, S.M.; Shuh, D.K.; Ollila, K.; Soroka,I.; Guo, J.-H. et al. September 18, 2006.

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The interaction of actinides with corroded iron surfaces was studied using resonant inelastic x-ray scattering (RIXS) spectroscopy at actinide 5d edges. RIXS profiles, corresponding to the f-f excitations are found to be very sensitive to the chemical states of actinides in different systems. Our results clearly indicate that U(VI) (as soluble uranyl ion) was reduced to U(IV) in the form of relatively insoluble uranium species, indicating that the iron presence significantly affects the mobility of actinides, creating reducing conditions. Also Np(V) and Pu (VI) in the ground water solution were getting reduced by the iron surface to Np(IV) and Pu (IV) respectively. Studying the reduction of actinides compounds will have an important process controlling the environmental behavior. Using RIXS we have shown that actinides, formed by radiolysis of water in the disposal canister, are likely to be reduced on the inset corrosion products and prevent release from the canister.

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  • Speciation Techniques and Facilities forRadioactive Materials at Synchrotron Light Sources, Karlsruhe, GE, 18-20Sept. 2006

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  • Report No.: LBNL--59436
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 927811
  • Archival Resource Key: ark:/67531/metadc894919

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • September 18, 2006

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  • Sept. 27, 2016, 1:39 a.m.

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Kvashnina, K.O.; Butorin, S.M.; Shuh, D.K.; Ollila, K.; Soroka,I.; Guo, J.-H. et al. Studies of Actinides Reduction on Iron Surfaces by Means ofResonant Inelastic X-ray Scattering, article, September 18, 2006; (digital.library.unt.edu/ark:/67531/metadc894919/: accessed December 15, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.