不溶性セシウム含有粒子タイプAの生成メカニズムに関する現象論的考察

伊東 賢一; 鈴木 晶大; 大石 祐治; 中森 文博; 溝上 暢人; 曳田 史郎; 野﨑 謙一朗; 本多 剛; 溝上 伸也

doi:10.14862/geochemproc.65.0_240

Abstracts of Annual Meeting of the Geochemical Society of Japan

DOI https://doi.org/10.14862/geochemproc.65.0_240

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Host: Abstracts of Annual Meeting of the Geochemical Society of Japan

Phenomenological Generation Mechanisms of Insoluble Cesium Bearing Particles Type A

*Kenichi Ito, Akihiro Suzuki, Yuji Ohishi, Fumihiro Nakamori, Masato Mizomami, Shirou Hikida, Kenichirou Nozaki, Takeshi Honda, Shinya Mizokami

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Keywords: Fukushima Daiichi Accident, Insoluble cesium bearing particle, Inorganic zinc rich paint, Peactor Core Isolation Cooling System, Cesium chemistry

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Pages 240-

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Abstract

Insoluble cesium bearing Type A particles, which were detected in Fukushima and metropolitan areas, are believed to have been generated by the Fukushima Daiichi accident. The particles are known to have silica-rich matrix containing elements such as Zn, Fe, Cs, Rb, Sn, K, and Cl, and are typically glass spheres having a diameter of 1-5 microns. However, the material origins are not well known for Si, Zn, K and Cl and sometimes misunderstood, possibly causing confusion in generation mechanisms discussion. In this paper, we discuss probable material origins for the Type A particles, considering the generation mechanisms in relation to the progression of Fukushima Daiichi Accident.

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