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PuO$$_{2-x}$$のエンタルピー測定と比熱の評価

Enthalpy measurement and evaluation of heat capacity on PuO$$_{2-x}$$

森本 恭一 ; 加藤 正人  ; 鹿志村 元明; 西 剛史; 市瀬 健一 ; 伊藤 昭憲; 小笠原 誠洋*

Morimoto, Kyoichi; Kato, Masato; Kashimura, Motoaki; Nishi, Tsuyoshi; Ichise, Kenichi; Ito, Akinori; Ogasawara, Masahiro*

MOX燃料の比熱は燃料設計における原子炉過渡時の評価や熱伝導率評価(レーザーフラッシュ法)において必要となる物性値である。本報告ではMOX燃料の基礎物性測定の一環として、高温域を中心としたPuO$$_{2-x}$$のエンタルピー測定を実施し、比熱の温度依存性及びO/Pu比依存性についての評価を行った。

Heat capacity of MOX fuel is one of the important physical properties for fuel design and for evaluation of thermal conductivity by laser flash method. In this study, the enthalpies of PuO$$_{2-x}$$ were measured as one of the evaluation of basic physical properties on MOX fuel. Additionally the temperature and O/Pu ratio dependencies on heat capacities were evaluated by analysing the enthalpy data.

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