@article{oai:repo.qst.go.jp:00047376,
 author = {Kobayashi, Shingo and Shinomiya, Takayuki and Yoshida, Toru and Kitamura, Hisashi and Shirakawa, Yoshiyuki and Kurita, Kazuyoshi and Uchihori, Yukio and 小林 進悟 and 四野宮 貴幸 and 吉田 徹 and 北村 尚 and 白川 芳幸 and 内堀 幸夫},
 journal = {Radiation Measurements},
 month = {Nov},
 note = {The characteristic X-ray detector (CXRD), a CsI(Tl) scintillator with a 50-mm diameter, is a directional X-ray sensor that measures characteristic X-rays from radioactive material, such as 137Cs, and identifies the direction of radioactive contamination. We evaluated a CXRD and visualized the
distribution of radioactivity in the contaminated area near the Fukushima Dai-ichi nuclear power station, where the ambient dose equivalent rate was 2.1 μSv/h at 1 m above ground level. We found a good correlation between the characteristic X-ray fluxes and the distribution of radioactive contaminants with a 0.823 Pearson product-moment correlation coefficient.},
 pages = {26--30},
 title = {Characteristic X-ray detector: in-situ imaging of radioactive contaminant distribution},
 volume = {82},
 year = {2015}
}