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Separation and recovery of Cm from Cm-Pu mixed oxide samples containing Am impurity

Am不純物を含むCm-Pu混合酸化物試料からのCmの分離回収

林 博和; 萩谷 弘通; Kim, S.-Y.*; 森田 泰治; 赤堀 光雄; 湊 和生

Hayashi, Hirokazu; Hagiya, Hiromichi; Kim, S.-Y.*; Morita, Yasuji; Akabori, Mitsuo; Minato, Kazuo

$$^{244}$$Cmの壊変によって$$^{244}$$Cm-$$^{240}$$Pu混合酸化物となった40年前に製造された$$^{244}$$Cm酸化物試料を硝酸溶液中に溶解し、陰イオン交換樹脂カラムを用いてプルトニウムイオンを除去し、3級ピリジン型樹脂及び硝酸-メタノール溶液を用いたクロマトグラフ法によってAm不純物を除去したCm溶液を用いてCm酸化物の原料となるCmシュウ酸塩を調製した。調製したCmシュウ酸塩試料はCm化合物の調製及び物性測定用試料として供給した。

$$^{244}$$Cm was separated and recovered as an oxalate from $$^{244}$$Cm-$$^{240}$$Pu mixed oxide which had been $$^{244}$$Cm oxide sample prepared 40 years ago. Plutonium ions were removed from the solution prepared by dissolution of $$^{244}$$Cm-$$^{240}$$Pu mixed oxide in nitric acid, by using an anion exchange resin column. Curium oxalate, a precursor compound of curium oxide, was prepared from the purified curium solution and supplied for the syntheses and measurements of the thermochemical properties of curium compounds.

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パーセンタイル:67.59

分野:Chemistry, Analytical

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