<i>In Situ</i> Gamma Spectrometry Intercomparison in Fukushima, Japan [in Japanese]
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Intercomparison of <i>in situ</i> gamma spectrometry was organized at a site contaminated by the radioactive fallout that originated from the Fukushima Dai-ichi Nuclear Power Plant accident. This intercomparison was conducted by eight teams from four different institutions, which have contributed to the government-led project to construct distribution maps of radionuclides deposited on the ground soil. The resultant <sup>134</sup>Cs and <sup>137</sup>Cs inventories evaluated by the participants agreed within 6% of the coefficient of variation, after correction for inhomogeneous distribution of the dose rate in air. The evaluated <sup>40</sup>K inventories agreed within 4% of the coefficient of variation. The authors estimated that these results were in good agreement for creating distribution maps of the radionuclide inventory in the ground soil.
- Japanese Journal of Health Physics
Japanese Journal of Health Physics 50(3), 182-188, 2015
Japan Health Physics Society