DISTRIBUTION OF RN AND ITS PROGENY IN A DWELLING OF BANGALORE, INDIA

The effective dose due to the inhalation of indoor radon (Rn) and its progeny account, on average, for about one-half of all natural sources of radiation. However, recently the indoor surveys in Asia revealed that the dose contribution from Rn and its progeny can be equal to or even exceed that of Rn and its progeny. In view of this, an attempt has been made to observe the distribution of Rn levels for Bangalore, India. Dosimeters were installed at a constant distance from the wall, ceiling and flooring of the room. All the windows and doors were closed for 90 days to study the variations with respect to the distance. Dosimeters were also deployed in upper and lower parabolic fashion. Higher concentrations were observed at the wall, ceiling and flooring of the room lowering as the detector is moved away from them. Results are discussed in detail.

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