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Microstructure and elemental distribution of americium-containing MOX fuel under the short-term irradiation tests

短期照射Am含有MOX燃料における組織変化と元素分布

田中 康介 ; 廣沢 孝志 ; 大林 弘 ; 小山 真一 ; 吉持 宏; 田中 健哉

Tanaka, Kosuke; Hirosawa, Takashi; Obayashi, Hiroshi; Koyama, Shinichi; Yoshimochi, Hiroshi; Tanaka, Kenya

MOX燃料の照射挙動に及ぼすAm添加の影響を調査するため、原子力機構ではAm-1照射試験を実施している。本報では、短期(10分間及び24時間)照射したAm-MOX燃料においてこれまでに得られた燃料組織観察結果及びEPMAによる元素分布測定結果について報告する。

In order to investigate the effect of americium addition to MOX fuels on the irradiation behavior, the "Am-1" program is being conducted in JAEA. The Am-1 program consists of two short-term irradiation tests of 10-minute and 24-hour irradiations and a steady-state irradiation test. The short-term irradiation tests were successfully completed and the post irradiation examinations (PIEs) are in progress. The PIEs for Am-containing MOX fuels focused on the microstructural evolution and redistribution behavior of Am at the initial stage of irradiation and the results to date are reported.

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