Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9781842 | Journal of Physics and Chemistry of Solids | 2005 | 6 Pages |
Abstract
An experiment of MOX codeposition from U-Pu-Ce containing molten salt in oxide -electrowinning reprocessing was performed. Composition of O2/Cl2/Ar mixed gas, Ce concentration and U/Pu concentration in the salt were chosen as variable parameters. Ten tests were performed in this experiment. Current efficiency in each test was about 60-99%, and apparent dependence of the current efficiency on concentration of Ce in the salt was not seen in this experiment. Recovered MOX deposits contained about 5-19Â wt% of Pu and 0.5-2Â wt% of Ce. Concentration of Pu and Ce in the MOX deposit was influenced by O2/Cl2/Ar mixed gas composition and Ce concentration in the salt, respectively. Microphotographs of cross-section show that the MOX deposit was a complex of small columnar crystals. Some parts of the cross-section were analyzed by EPMA. These results indicated that a U rich region (concentration of U: about 80Â wt%) exists in central part of the crystal and Pu rich regions (concentration of Pu: about 80Â wt%) scatter on its surface and Ce is distributed rather uniformly.
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Authors
F. Sato, M. Fukushima, M. Myochin, T. Namba, M.V. Kormilitsyn, V.S. Ishunin, A.V. Bychkov, T. Inagaki,