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Report No.

Experimental validation of transmutation behavior for U and Am samples irradiated under fast neutron spectra based on chemical analysis

Onishi, Takashi; Koyama, Shinichi

Concepts of effective use and recycling of minor actinide (MA) in fast reactor were proposed. Evaluation of MA transmutation behavior plays important roles for this purpose. Therefore, Am and U samples with high purity were irradiated in an experimental fast reactor Joyo. Transmutation behavior of Am and U samples were evaluated experimentally by chemical analysis. Transmutation ratios of $$^{241}$$Am were calculated. Their dependence on neutron flux and neutron energy was evaluated. $$^{239}$$Pu production per neutron fluence from $$^{238}$$U in the reflector region was larger than that in the fuel stack region.



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