Thermal expansion measurement and heat capacity evaluation of hypo-stoichiometric PuO$$_{2.00}$$
加藤 正人; 内田 哲平; 松本 卓; 砂押 剛雄*; 中村 博樹; 町田 昌彦
Kato, Masato; Uchida, Teppei; Matsumoto, Taku; Sunaoshi, Takeo*; Nakamura, Hiroki; Machida, Masahiko
Linear thermal expansion of PuO$$_{2-x}$$ was measured by dilatometry in an oxygen partial pressure-controlled atmosphere. The measured data of PuO$$_{2-x}$$ slightly increased with deviation $$x$$. The linear thermal expansion of PuO$$_{2-x}$$ was determined as a function of temperature and O/M ratio, and the equation for the thermal expansion coefficient was derived. Heat capacity of PuO$$_{2-x}$$ was evaluated using this equation. The effect of O/M ratio on heat capacity was small. In addition to the vibration and dilatational terms, it is important to analyze the Schottky term in evaluating heat capacity of PuO$$_{2}$$.
使用言語 : English
掲載資料名 : Journal of Nuclear Materials
: 451
: 1-3
ページ数 : p.78 - 81
発行年月 : 2014/08
出版社名 : Elsevier
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キーワード : no keyword
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登録番号 : AA20130717
抄録集掲載番号 : 42000872
論文投稿番号 : 14529
Accesses  (From Jun. 2, 2014)
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