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Measurement of radium (226Ra) and thorium (232Th) content, and exhalation rate of radon (222Rn) and thoron (220Rn) from soil and building materials are important in the context of modeling indoor radon and thoron concentration. In this study, exhalation rates of radon and thoron from commonly used building materials in India were measured using active measurement techniques. Also the activity concentrations...
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