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Precise age determination of a single plutonium particle using inductively coupled plasma mass spectrometer

ICP-MSによる単一Pu粒子の精確な年代決定法

宮本 ユタカ; 江坂 文孝; 鈴木 大輔; 間柄 正明

Miyamoto, Yutaka; Esaka, Fumitaka; Suzuki, Daisuke; Magara, Masaaki

直径1$$mu$$mの単一Pu粒子8個を使ってPu精製時期を決定及び評価した。$$^{243}$$Amスパイク添加とPu及びAmの微量化学分離を用いることで精製時期の精度と正確さが改善された。この方法で求めた精製時期は高い精度と確度で参照値と一致した。また、Amスパイクを使わない一般的な年代決定法に比べて高い精度の結果が得られた。

Age-dating of single plutonium particles with diameters of 1 $$mu$$m was demonstrated using eight particles. The precision and accuracy of the Pu age were improved through the addition of an $$^{243}$$Am spike to the sample solutions and by the trace chemical separation of the Pu and Am. The determined age in this work was in good agreement with the expected age with high accuracy and precision. The age with this technique was more precise than that determined using the common technique without an Am spike.

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パーセンタイル:29.95

分野:Chemistry, Inorganic & Nuclear

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