[1A11-14] Cesium Compounds and Fuel Fabrication Technique

[1A11] The formation processes of highly concentrated radioactive Cs particles released by the Fukushima Dai-ichi Nuclear Power plant accident from the view point of the amounts of Sr and Pu.

*JUNYA IGARASHI¹, Jian Zheng², Zijian Zhang¹, Kazuhiko Ninomiya¹, Yukihiko Satou³, Miho Fukuda², Youy Ni^2,4, Tatsuo Aono², Keisuke Sueki⁵, Atsushi Shinohara¹ (1. Graduate school of sicience, Osaka University, 2. National Institutes for Quantum and Radiological Science and Technology, 3. Japan Atomic Energy Agency, 4. Peking University, 5. Graduate School of Pure and Applied Sciences, Tsukuba University)

Keywords:Fukushima Dai-ichi Nuclear Power Plant, Radioactive particle, Radiochemical analysis, Strontium, Plutonium

Radioactive particles having highly concentrated radioactive Cs were released into the environment by the accident of Fukushima Dai-ichi Nuclear Power plant. By radiochemical analysis, the amounts of Sr and Pu in these particles were quantified. The concentrations of Sr and Pu were different by the origin of the reactors. This difference indicated the different formation process of each radioactive particle by the reactor.