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Thermal conductivity of (Np$$_{0.20}$$Pu$$_{0.50}$$Am$$_{0.25}$$Cm$$_{0.05}$$)O$$_{2-x}$$ solid solutions

Nishi, Tsuyoshi; Takano, Masahide ; Akabori, Mitsuo; Arai, Yasuo

To clarify the dependence of thermal conductivity on storage time of curium containing oxide, the authors prepared the sintered sample of (Np$$_{0.20}$$Pu$$_{0.50}$$Am$$_{0.25}$$Cm$$_{0.05}$$)O$$_{2-x}$$ (x = 0.02, 0.04) solid solutions and evaluated the thermal conductivity. The thermal conductivities of (Np$$_{0.20}$$Pu$$_{0.50}$$Am$$_{0.25}$$Cm$$_{0.05}$$)O$$_{2-x}$$ exponentially decreased with increasing storage duration. This result suggested that the degradation of the thermal conductivities was attributed to the accumulation of lattice defects by self-irradiation.

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Category:Materials Science, Multidisciplinary

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