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Electrochemical Measurement of Diffusion Coefficient of Actinides and Rare Earths in Liquid Cd

2012; Elsevier BV; Volume: 7; Linguagem: Inglês

10.1016/j.proche.2012.10.121

1876-6196

Tomoaki Murakami, Yoshiharu Sakamura, N. Akiyama, Shinichi Kitawaki, Akira Nakayoshi, Tadafumi Koyama,

Nuclear Materials and Properties

Liquid Cd is used as a reaction medium in the pyrometallurgical reprocessing for spent nuclear fuels. The diffusion coefficient of a series of key elements, such as actinides and rare earths, in liquid Cd is one of the important physical properties for a kinetic analysis of the pyrometallurgical reprocessing. Recently, the authors applied an electrochemical method to the measurement of a diffusion coefficient in liquid metal. This presentation summarizes the diffusion coefficients of actinides (U and Pu) and rare earths (La, Pr, Nd, Gd, Y and Sc) in liquid Cd measured by the electrochemical method.