-emitting nuclides analysis of the stagnant water including sediments in Fukushima Daiichi NPS, 2; Detection of fine particle containing -emitters by SEM-EDX and alpha Track

Yomogida, Takumi ; Ouchi, Kazuki ; Morii, Shiori ; Oka, Toshitaka ; Kitatsuji, Yoshihiro ; Koma, Yoshikazu ; Konno, Katsuhiro*

To investigate the morphology of -nuclides in solid fraction of the stagnant water in the Fukushima Daiichi Nuclear Power Station's Unit 3 reactor, we tried to detect particles containing -nuclides by scanning electron microscopy-X-ray detection (SEM-EDX) and the alpha track method. As a result of SEM-EDX observation, several sub-m to 10 m size particles containing U were identified. The particles containing alpha emitters were identified by alpha-track method. These particles with few hundred m in diameter were mainly composed of iron.

Language	:	Japanese
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Meeting title	:	日本原子力学会2023年春の年会
Held date	:	2023/03
Location (city)	:	東京
Location (country)	:	日本
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Keywords	:	Fukushima Daiichi Nuclear Power Station Accident; 福島第一原子力発電所事故; 福島第一原子力発電所; 滞留水; 核種; 微粒子; 粒子分級; ウラン微粒子; SEM-EDX; アルファトラック法
Research Facility	:	第4研究棟
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Cooperating Institute	:	東京電力ホールディングス

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Registration No. : BB20221413
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