کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1880496 | 1533408 | 2015 | 5 صفحه PDF | دانلود رایگان |
• We tested a characteristic X-ray detector (CXRD) to image Cs-137 distribution.
• The CXRD can make an image of Cs-137 contamination by detecting characteristic X-rays.
• The correlation between X-ray image and Cs137 contamination in-situ was tested.
• The CXRD has good performance to image hotspots in a contaminated area.
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.
Journal: Radiation Measurements - Volume 82, November 2015, Pages 26–30