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高速増殖炉サイクル研究開発セミナー $$sim$$若手研究者と語る研究開発の将来展望$$sim$$ -2003年2月7日開催-

The Seminar on the Research and Development for the Fast Breeder Reactor Cycle -Discussion on Future Prospect of the Research and Development with Young Researchers- -Held in Feb.7,2003-

小井 衛; 茶谷 恵治; 長谷川 信

Koi, Mamoru; Chatani, Keiji; Hasegawa, Makoto

2003年2月7日、日本科学未来館において「高速増殖炉サイクル研究開発セミナー」を一般公開で開催した。本セミナーの概要を会議報告としてサイクル機構技報に掲載す。

The application of the fluoride volatility process in the reprocessing of fuel from the fast breeder reactor is regarded as one of the economical methods. Plutonium hexafluoride (PuF6), however, reacting with fluorine (F2) and plutonium dioxide (PuO2) as the raw material, is in an unstable condition and tends to remain as a solid compound in the process after decomposing into plutonium tetrafluoride (PuF4). Suitable conditions should be established for the practical use of this process. One of them is to enhance the stability of PuF6. The behaviour of plutonium fluorination and relevant chemical reactions were investigated by referring to sundry literature and by thermodynamic calculation. It was then compared with recent data from laboratory scale experiments for this paper. Results from the theoretical analysis agreed with experimental observation that PuF6 could be formed stably under a high temperature condition (approx.1000 K) with over supply of figher concentration of F2.

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