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Report No.

Target accuracy of MA nuclear data and progress in validation by post irradiation experiments with the fast reactor "JOYO"

Oki, Shigeo; Yokoyama, Kenji; Numata, Kazuyuki*; Jin, Tomoyuki*

To develop a commercialized fast reactor cycle system involving the recycling of minor actinide (MA) nuclides, Japan Nuclear Cycle Development Institute has launched the isotopic composition analysis of post irradiation examination (PIE) results for fuels and MA samples irradiated at the experimental fast reactor "JOYO". This paper presents the target accuracy of MA nuclear data, as well as the progress in validation of those by PIE analyses. The analysis result on the first examined MA sample suggested the necessity of re-evaluation of the isomeric ratio for 241Am capture reaction both in ENDF/B-VI and in JENDL-3.3.



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