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An Experimental investigation of the effects of americium addtion to (U,Pu)O$$_{2-x}$$ on phase relation

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逢坂 正彦 ; 三輪 周平 ; 吉持 宏; 田中 健哉; 黒崎 健*; 山中 伸介*

Osaka, Masahiko; Miwa, Shuhei; Yoshimochi, Hiroshi; Tanaka, Kenya; Kurosaki, Ken*; Yamanaka, Shinsuke*

(U,Pu,Am)O$$_{2-x}$$の相状態をXRD、金相観察及びDTAにより実験的に評価した。解析の結果、Amは3価の状態で存在し、電気的中性を補償するためにUが5価になることが示唆された。

Phase relation of (U,Pu,Am)O$$_{2-x}$$ solid solution was experimentally investigated by using XRD, ceramograhy and DTA. It is concluded from the present investigation that Am is likely to exist as fixed valences of Am$$^{3+}$$ and corresponding amount of U$$^{4+}$$ is substituted by the U$$^{5+}$$ for the preservation of electrical neutrarity.

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