[2E10-15] Radioactivity Measurement and Environmental Restoration

[2E13] Estimation of on-site radionuclides inventories of Fukushima Daiichi NPS based on their off-site distribution

(7)Estimation of distribution of radionuclides

*Kazuki Iijima¹, Takayuki Sasaki², Daisuke Matoba², Terumi Dohi¹, Kenso Fujiwara¹, Yoshikazu Koma¹, Yoko Takahatake¹ (1. JAEA, 2. Kyoto University)

Keywords:Accident of the Fukushima Daiichi NPS, Radionuclides, Radionuclides inventory, dependency on direction

Concentrations of radionuclides, such as Cs-134, Cs-137, Sr-90, Pu-238, Pu-239+240, Am-241 and Cm-244, in surface soil were measured, and the distribution of radionuclides inventory was evaluated in order to confirm its dependency on radioactive plumes.