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Contribution ratios of natural radionuclides to ambient dose rate in air after the Fukushima Daiichi Nuclear Power Plant accident

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Abstract

It is important that the contribution ratio of natural radioactivity to ambient dose rate in air is clarified after the accident at the Fukushima Daiichi Nuclear Power Plant. In this study, ambient dose rates in air were observed at 34 places in eastern Japan and the contribution ratios were clarified. The mean contribution ratio of the natural radionuclides was 71 % (range 0–100 %). In most places, the natural radionuclides made a larger contribution to the ambient dose rate in air.

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Acknowledgments

This work was funded by the strategic research fund of Tokyo Metropolitan University.

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  1. Graduate School of Human Health Sciences, Tokyo Metropolitan University, 7-2-10 Higashiogu, Arakawa-ku, Tokyo, 116-8551, Japan

    Kazumasa Inoue, Hiroshi Tsuruoka, Tan Le Van & Masahiro Fukushi

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  1. Kazumasa Inoue
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  2. Hiroshi Tsuruoka
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  3. Tan Le Van
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  4. Masahiro Fukushi
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Correspondence to Masahiro Fukushi.

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Inoue, K., Tsuruoka, H., Le Van, T. et al. Contribution ratios of natural radionuclides to ambient dose rate in air after the Fukushima Daiichi Nuclear Power Plant accident. J Radioanal Nucl Chem 307, 507–512 (2016). https://doi.org/10.1007/s10967-015-4164-8

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  • DOI: https://doi.org/10.1007/s10967-015-4164-8

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