A COMPARATIVE STUDY OF DIURNAL VARIATION OF RADON AND THORON CONCENTRATIONS IN INDOOR ENVIRONMENT

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Abstract

The diurnal measurements of radon and thoron concentrations were performed in the indoor environment of Nuclear Research Laboratory, Badshahi Thaul, Tehri Garhwal, Uttarakhand, India by using AlphaGUARD, Portable Radon Monitor (SMART RnDuo) and RAD7. Using AlphaGUARD, the radon concentration was found to vary from 8 to 94 Bq m−3 with an average of 41.5±22.2 Bq m−3. Using Portable Radon Monitor (SMART RnDuo), the concentration was found to vary from 2 to 101 Bq m−3 with an average of 41.7±23.6 Bq m−3, and with RAD7, the concentration was found to vary from 3 to 99 Bq m−3 with an average of 40±20.3 Bqm−3. While the thoron concentration using Portable Radon Monitor (SMART RnDuo) was found to vary from 4 to 65 Bq m−3 with an average of 17.3±12.9 Bqm−3, and using RAD7, the concentration was found to vary from 5 to 90 Bq m−3 with an average of 29.8±17.3 Bq m−3.

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