Mapping of the cumulative beta-ray dose on the ground surface surrounding the Fukushima area

作者：Endo Satoru^*; Kajimoto Tsuyoshi; Tanaka Kenichi; Nguyen Thanh T; Hayashi Gohei; Imanaka Tetsuji

来源：Journal of Radiation Research, 2015, 56(suppl 1): I48-I55.

DOI：10.1093/jrr/rrv056

• Fukushima Daiichi Nuclear Power Plant accident
• beta-ray dose
• radiotellurium
• radioiodine
• radiocesium

A large amount of the fission products released by the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident on 11 March 2011 was deposited in a wide area from Tohoku to northern Kanto. A map of the estimated cumulative beta-ray dose (70 mu m dose equivalent) on the soil surface for one year after the FDNPP accident has been prepared using previously reported calculation methods and the 2-km mesh survey data by MEXT. From this map of estimated dose, areas with a high cumulative beta-ray dose on the soil surface for one year after the FDNPP accident were found to be located in the Akogi-Teshichiro to Akogi-Kunugidaira region in Namie Town, and in the southern Futaba Town to the northern Tomioka Town region. The highest estimated cumulative beta-ray dose was 710 mSv for one year at Akogi-Teshichiro, Namie Town.

• 出版日期2015-12