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福島第一原子力発電所2号機ペデスタル内燃料デブリの分析,11; 硝酸溶解法をベースとした核種分析

Analysis of fuel debris obtained from inside the pedestal of Unit 2 of Fukushima Daiichi Nuclear Power Station, 11; Nuclide analysis of fuel debris dissolved by nitric acid

大西 貴士 ; 新田 旭; 吉田 健 ; 豊田 千尋; 関尾 佳弘  ; 前田 宏治 ; 池内 宏知 ; 溝上 暢人*; 溝上 伸也*

Onishi, Takashi; Nitta, Asahi; Yoshida, Takeru; Toyota, Chihiro; Sekio, Yoshihiro; Maeda, Koji; Ikeuchi, Hirotomo; Mizokami, Masato*; Mizokami, Shinya*

燃料デブリの分取試料に対して、硝酸及び微量フッ化水素酸を用いた溶解手法を適用し、ICP-MSによる質量分析及び放射線計測を行い、燃料デブリに含まれる核種の分析を行った。

Several picecs of fuel debris were dissolved using simple dissolution method that employed nitric acid solutionwith trace hydrofluoric acid. Nuclides in dissolved fueldebris solution were analyzed by inductively coupled-plasma mass spectrometry and radiation measurements.

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