Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9793661 | Journal of Nuclear Materials | 2005 | 5 Pages |
Abstract
The oxygen potential isotherms of (U, Pu, Am)O2âx were represented by a chemical thermodynamic model proposed by Lindemer et al. It was assumed in the present model that (U, Pu, Am)O2âx consisted of the chemical species [UO2], [PuO2], [Pu4/3O2], [AmO2] and [Am5/4O2] in a pseudo-quaternary system by treating the reduction rates of Pu and Am as identical; furthermore an interaction between [Am5/4O2] and [UO2] was introduced. The agreement between analytical and experimental isotherms was good, but the analytical values slightly overestimated the experimental values especially in the case of lower Am content. Adding an interaction between [Am5/4O2] and [PuO2] to the model resulted in a better representation.
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Authors
Masahiko Osaka, Takashi Namekawa, Ken Kurosaki, Shinsuke Yamanaka,