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Satou, Yukihiko*; Sueki, Keisuke*; Minowa, Haruka*; Nakama, Shigeo; Yoshikawa, Hideki
no journal, ,
We obtained the soil sample close to the Fukushima Daiichi Nuclear Power Plant. The particle including highly cesium was separated from the soil sample. Estimated ratio of 
Cs to 
Cs is 0.90. This ratio accorded with 1st unit of Fukushima Daiichi Nuclear Power Plant.
Satou, Yukihiko*; Sueki, Keisuke*; Sasa, Kimikazu*; Minowa, Haruka*; Yoshikawa, Hideki; Fujiwara, Kenso; Nakama, Shigeo; Adachi, Koji*; Igarashi, Yasuhito*
no journal, ,
Radioactive particle including high density cesium were released caused by the Fukushima Daiichi nuclear disaster. In this study, we analyzed distribution of radioactive particle and its characteristic about obtained soils and dusts. As a result, radioactive particles were confirmed from soil sample. In particular, 100 micro meter in diameters particles were found at the point of north-northwest direction approximately 7km from the nuclear power plant. Found particles resembled an elementary composition and surface state of the particle found in the 20km northwest from nuclear power plant and Tsukuba.
Satou, Yukihiko*; Sueki, Keisuke*; Sasa, Kimikazu*; Minowa, Haruka*; Yoshikawa, Hideki; Fujiwara, Kenso; Nakama, Shigeo
no journal, ,
We separated radioactive particles from soil and dust sample obtained around Fukushima Dai-ichi Nuclear Power Plant. Separated all particles can categorize unit-1 and unit-2 origin. And 
Sb was detected from unit-1 origin samples. Moreover, radioactive particle was made up 80 weight percent silica.
Satou, Yukihiko; Sueki, Keisuke*; Matsuo, Kazuki*; Minowa, Haruka*; Yoshikawa, Hideki
no journal, ,
no abstracts in English