抄録
ESR measurement using tooth is one of the valid dosimetry methods for residents near Semipalatinsk Nuclear Test Site in Kazakhstan. In this method, native people's teeth are brought to Japan by airplane at first. X-ray baggage scanning at airports may increase the exposure dose of the teeth. This study investigates the influence of X-ray baggage scanning on ESR dosimetry using tooth.
Two Japanese teeth, 'A' and 'B', were separated into six samples. Three samples were irradiated with X-ray from a baggage scanner at the Incheon airport in Seoul. The other samples were not irradiated as control. The doses of all the samples were measured and the results were compared between irradiated and un-irradiated groups.
The dose was evaluated to be 173.6 +/- 16.3 mGy for irradiated 'A'(inside) and 185.7 +/- 16.8 mGy for un-irradiated 'A' (inside). The results for the irradiated and un-irradiated samples are 195.4 +/- 19.0 mGy and 198.4 +/- 23.7 mGy for 'A'(outside), 119.1 +/- 11.9 mGy and 105.7 +/- 11.9 mGy for 'B', respectively. Differences are not observed between two groups. It seems unnecessary to consider the dose caused by X-ray baggage scanning in ESR dosimetry using tooth.
