Effect of grain size on radon exhalation rate from calcium silicate rocks using alpha track detector

الملخص EN

Radon, generated in the earth’s crust, enters the pore spaces and is transported by diffusion, then, it is released into the surrounding atmosphere.

grain size is one of the important factors that affect the radon exhalation rate from the soil.

radon emanates through the soil grains into air and diffuses to the atmosphere.

the variation of radon concentration and exhalation rate from calcium silicate rock samples, with different grain sizeswas measured using alpha track detector.

the high value of radon exhalation rate was 43.05 ± 2.17 at gravel sizeand the lowest value was 8.98 ± 0.85at mud size.

the results indicate that the exhalation rate was increased with increasing grain size of the studied samples.

theobtained values of radon exhalation rate for all samples were found to be under the radon exhalation rate limit reported worldwide, and unscear.

the present study is important for radiological impact assessment studies that requires information on the exposure due to natural radiation to protect the environment.