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Ambient dose equivalent conversion coefficients for radionuclides exponentially distributed in the ground

地中に指数分布した放射性核種に対する周辺線量当量換算係数

斎藤 公明; Petoussi-Henss, N.*

Saito, Kimiaki; Petoussi-Henss, N.*

Conversion coefficients of radionuclide deposition density to the ambient dose equivalent rate at 1 m height above ground were calculated for exponentially distributed sources in the ground. Firstly, Monte Carlo transport simulations assuming exponential distributions in the ground were performed to obtain ambient dose equivalent for mono-energetic $$gamma$$ ray sources having different relaxation depths; next, on the basis of the simulated data, conversion coefficients for radionuclides were composed considering recent nuclear decay data. The ambient dose equivalent rates were then compared to the effective dose rates for reference adults and a new-born baby. It was confirmed that the ambient dose equivalent sufficiently overestimates effective doses.

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パーセンタイル:8.09

分野:Nuclear Science & Technology

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