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(U,Pu)O$$_{2}$$の熱伝導率におけるPu含有の影響

The Influence of Pu-content on thermal conductivities of (U,Pu)O$$_{2}$$ solid solution

森本 恭一 ; 加藤 正人  ; 小笠原 誠洋*

Morimoto, Kyoichi; Kato, Masato; Ogasawara, Masahiro*

UO$$_{2}$$及びPu含有率:20$$sim$$40%のMOX燃料の熱伝導率を測定した。これらについて他機関で測定されたMOX燃料の熱伝導率の測定値と比較し、熱伝導率のPu含有率依存性について評価した。これよりMOXの熱伝導率はUO$$_{2}$$の熱伝導率に比べてわずかに低く、Pu含有率が20$$sim$$40%の範囲ではほとんど変化がないことがわかった。

Thermal conductivities of UO$$_{2}$$ and MOX containing Pu from 20 to 40% were measured. These data were compared with the thermal conductivities obtained in other institutes. From the results of this experiment, it was found that the thermal conductivities of MOX was lower than those of UO$$_{2}$$ and the variation of thermal conductivities of MOX hardly observed in the Pu-content range from 20% to 40%.

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