Thermal conductivity of near-stoichiometric (U, Ce)C and (U, Pu, Ce)C solid solutions |
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Authors: | Yasuo Arai Toshihiko Ohmichi Susumu Fukushima Muneo Handa |
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Affiliation: | Japan Atomic Energy Research Institute, Oarai-machi, Ibaraki-ken, 311-13, Japan |
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Abstract: | The thermal conductivities of near-stoichiometric (U, Ce)C and (U, Pu, Ce)C solid solutions containing CeC up to 10 mol% were determined in the temperature range from 740 to 1600 K by the laser flash method. The thermal conductivity decreased with the cerium content in the solid solutions. The electrical resistivities were also measured for the purpose of analyzing the heat conduction mechanism. It was found that the decrease of electronic heat conduction caused by the addition of cerium resulted in decreasing the thermal conductivities of (U, Ce)C and (U, Pu, Ce)C compared with UC and (U, Pu)C. |
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