Oxygen potentials of mixed oxide fuels for fast reactors

Kato, Masato ; Tamura, Tetsuya*; Konashi, Kenji*

Oxygen potentials of homogenous (Pu $_{0.2}$ U $_{0.8}$ )O $_{2-x}$ and (Np $_{0.02}$ Am $_{0.02}$ Pu $_{0.3}$ U $_{0.66}$ )O $_{2-X}$ which have been developed as a fuel of fast breeder reactors were measured at temperatures of 1473 - 1623 K by gas equilibrium technique using Ar/H $_{2}$ /H $_{2}$ O gas mixture. Oxygen potentials of (Pu $_{0.2}$ U $_{0.8}$ )O $_{2-x}$ measured in this work were about 25 kJ/mol lower than those of (Pu $_{0.3}$ U $_{0.7}$ )O $_{2-x}$ and were consistent with the value calculated by Besmenn and Lindemer's model. Those of (Np $_{0.02}$ Am $_{0.02}$ Pu $_{0.3}$ U $_{0.66}$ )O $_{2-X}$ were slightly higher than those of MOX without minor actinides.

Language	:	English
Journal	:	Journal of Nuclear Materials
Volume	:	385
Number	:	2
Pages	:	p.419 - 423
Publication Year/Month	:	2009/03
Meeting title	:	E-MRS 2008 Spring Meeting; 3rd Symposium N on Nuclear Materials
Held date	:	2008/05
Location (city)	:	Strasbourg
Location (country)	:	France
Patent information	:
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Paper URL	:	https://doi.org/10.1016/j.jnucmat.2008.12.012
DOI for research data	:
Keywords	:	no keyword
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Registration No. : BB20073034
JAEA Abstracts No. : 37000707
Paper Submission No. : 5743

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