Abstract
The dose distribution is a crucial evaluation to ensure radiation safety once using a Crookes tube in the teaching of science in Japan. In this study, the spatial dose distribution surrounding the Crookes tube was estimated using TLDs. The results showed that the high dose distribution predominated in front of the Crookes tube with a range of 0.23–0.46 mSv/h at a distance of 1 m. From the experimental data, the present study made some recommendations for radiation protection and operational condition on these apparatuses. These results will contribute as a radiation safety database on Crookes tube serving in radiological education in Japan.
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