Thoron exhalation rates in areas of Japan

Shimo, Michikuni*; Ishimori, Yuu ; Hosoda, Masahiro*; Tokonami, Shinji*

Thoron exhalation rates were measured with a newly made portable instrument at 33 areas in 7 prefectures of Japan. Thoron exhalation rates ranged from 49 to 4890 mBq m $^{-2}$ s $^{-1}$ . Radon exhalation rates were also measured in many of the areas at the same time and ranged from 2.1 to 11 mBq m $^{-2}$ s $^{-1}$ . Thoron exhalation rates showed a rough correlation with radon exhalation rates. Both exhalation rates also showed a rough correlation with geological features.

Language	:	English
Journal	:	Radiation Protection Dosimetry
Volume	:	141
Number	:	4
Pages	:	p.473 - 476
Publication Year/Month	:	2010/09
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Paper URL	:	https://doi.org/10.1093/rpd/ncq247
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Keywords	:	no keyword
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Registration No. : AA20100573
JAEA Abstracts No. :
Paper Submission No. : 12496

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