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۱Bricks Rn222 Exhalation Rates in Some Samples from Different Countries
اطلاعات انتشار: World Applied Sciences Journal، بيست و نهم،شماره۶، ۲۰۱۴، سال
تعداد صفحات: ۴
Radon concentrations in brick samples collected from different countries were measured using the sealed–can technique based on the CR–39 SSNTDs. CR–39 detectors are widely used for radon exhalation rate measurements in bricks under different conditions. The detectors were exposed to standard radon concentration from a standard 226Ra source. The average 222Rn and 226Ra concentrations are found to be 280 Bq m 3 and 1.72 Bq kg 1, respectively. The highest radon exhalation rate was found in Samawah bricks, Iraq. The values of effective radium content are less than the permissible value of 370 Bq kg 1.
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