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Radiation Protection Dosimetry 7:55-58 (1984)
© 1984 Oxford University Press

The Influence of Moisture and Temperature on Radon Exhalation

E. Stranden, A.K. Kolstad and B. Lind

The radon exhalation from samples of concrete, alum shale and alum shale bearing soil was studied as a function of the moisture content of the samples. A few simple experiments showed that, up to a certain moisture content, the radon exhalation increased with increasing moisture content. In some of the samples, the radon exhalation increased by a factor of almost 20. When the moisture content was increased further, the radon exhalation decreased to levels comparable to the exhalation from dry samples. The radon exhalation as a function of temperature was studied by experiments performed at 5 oC, 22 oC and 50 oC. The radon exhalation increased with increasing temperature. This effect was, however, less pronounced than the effect of the moisture.


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