title: Aerial radiation monitoring around the Fukushima Dai-ichi Nuclear Power Plant using an unmanned helicopter.
abstract: The Great East Japan Earthquake on March 11, 2011 generated a series of large tsunami that seriously damaged the Fukushima Dai-ichi Nuclear Power Plant (FDNPP), which resulted in the release of radioactive materials into the environment. To provide further details regarding the distribution of air dose rate and the distribution of radioactive cesium ((134)Cs and (137)Cs) deposition on the ground within a radius of approximately 5 km from the nuclear power plant, we carried out measurements using an unmanned helicopter equipped with a radiation detection system. The distribution of the air dose rate at a height of 1 m above the ground and the radioactive cesium deposition on the ground was calculated. Accordingly, the footprint of radioactive plumes that extended from the FDNPP was illustrated.
authors: Headquarters of Fukushima Partnership Operations, Japan Atomic Energy Agency, 2-2-2, Uchisaiwai-cho, Chiyoda-ku, Tokyo 100-8577, Japan. Electronic address: sanada.yukihisa@jaea.go.jp.
authors: Yukihisa
authors: Y
authors: Sanada
authors: Headquarters of Fukushima Partnership Operations, Japan Atomic Energy Agency, 2-2-2, Uchisaiwai-cho, Chiyoda-ku, Tokyo 100-8577, Japan.
authors: Tatsuo
authors: T
authors: Torii
mesh_terms: D000396:Air Pollutants, Radioactive / Q000032:analysis*; D000401:Aircraft; D002588:Cesium Radioisotopes / Q000032:analysis; D062406:Fukushima Nuclear Accident; D007564:Japan; D055848:Nuclear Power Plants; D011834:Radiation Monitoring / Q000379:methods*; D011847:Radioactive Fallout / Q000032:analysis*; D011868:Radioisotopes / Q000032:analysis*
chemical_list: D000396:Air Pollutants, Radioactive; D002588:Cesium Radioisotopes; D011847:Radioactive Fallout; D011868:Radioisotopes
keywords: Fukushima Dai-ichi nuclear power plant; LaBr(3):Ce scintillator; Plastic scintillator; Radiation measurement; Radioactive cesium; Unmanned helicopter