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Journal Articles

Model of Oxygen Potential of (Pu$$_{0.3}$$U$$_{0.7}$$)O$$_{2pm X}$$ and (Np$$_{0.02}$$Am$$_{0.02}$$Pu$$_{0.3}$$U$$_{0.66}$$)O$$_{2-X}$$ based on Lattice Defect Theory

Kato, Masato; Aono, Shigenori; Kihara, Yoshiyuki; Konashi, Kenji*

Materials Models and Simulations for Nuclear Fuels MMSNF-3, CD-ROM, 13p., 13 Pages, 2004/00

The model of oxygen potential of (Pu$$_{0.3}$$U$$_{0.7}$$)O$$_{2pm X}$$ was derived by experimental data set based on the lattice defect theory. In the model, the oxygen potential is calculated as a function of O/M and the temperature of fuel. The oxygen potential was evaluated by the crossed point of two lines of oxygen potential in the hypo-stoichiometric region and in the hyper-stoichiometric region. The oxygen potential of (Np$$_{0.02}$$Am$$_{0.02}$$Pu$$_{0.3}$$U$$_{0.66}$$)O$$_{2-X}$$was also evaluated and compared with that of (Pu$$_{0.3}$$U$$_{0.7}$$)O2-X

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