Thermal properties and defect chemistry in nonstoichiometric (U,Pu)O $_{2}$

不定比性(U,Pu)O $_{2}$ の熱特性と欠陥化学

Urania-plutonia solid solution is chemically stable compound in both region of hyper- and hypo-stoichiometry, which has been developed as fuels of sodium-cooled fast reactors. In this work, oxygen potential data of (U,Pu)O $_{2}$ were evaluated based on defect chemistry. And relationship with other thermal properties was described with using the point defect evaluation result. Brouwer diagram of UO $_{2}$ , PuO $_{2}$ and (U,Pu)O $_{2}$ were illustrated from the oxygen potential data. Relational equations to describe O/M ratio and defect concentrations were derived from Brouwer diagram. Relationship between oxygen potential and other thermal properties was evaluated.

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発表会議名	:	Nuclear Materials Conference 2016 (NuMat 2016)
開催年月	:	2016/11
開催都市	:	Montpellier
開催国	:	France
キーワード	:	MOX燃料; 熱物性

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Thermal properties and defect chemistry in nonstoichiometric (U,Pu)O

不定比性(U,Pu)Oの熱特性と欠陥化学

Thermal properties and defect chemistry in nonstoichiometric (U,Pu)O $_{2}$

不定比性(U,Pu)O $_{2}$ の熱特性と欠陥化学