Chemical Vapor Transport of Iron by Iodine Liberated due to Radiolysis of Cesium Iodide
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概要
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The cladding component chemical transport (CCCT) is one of the important modes of the fuel-cladding chemical interaction (FCCI) of LMFBR. In order to explain this pheno-menon, a model based on the vapor phase chemical transport of cladding components by iodine was proposed by Johnson <I>et</I> <I>al</I>. and Calais <I>et</I> <I>al</I>. In this study, experimental work has been done to check whether such a mechanism can work due to the free iodine generated by the radiolysis of Csl vapor. As a result, it was confirmed that a significant amount of Fe can be transported <I>via</I> vapor phase from the Fe sheet heated at 430°C to the Mo plate heated at 720 or 800°C. Preliminary comparisons between this study and the in-pile irra-diation tests have been made. This result qualitatively supports the appropriateness of the model for the CCCT mechanism based on the vapor phase transport of cladding components by radiation-induced iodine.
著者
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Kanno Masayoshi
Department Of Applied Chemistry Tokyo Metropolitan University
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Yamawaki Michio
Department of Nuclear Engineering, Faculty of Engineering, University of Tokyo
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HIRAI Mutsumi
Department of Nuclear Engineering, Faculty of Engineering, University of Tokyo
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YONEOKA Toshiaki
Department of Nuclear Engineering, Faculty of Engineering, University of Tokyo
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KONASHI Kenji
Tokai Works, Power Reactor and Nuclear Fuel Development Corp.
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