Estimation of radiological dose due to radon, thoron and their progeny in indoor atmosphere of Shivamogga district, Karnataka, India.

Authors :: Rangaswamy, D. R.
Suresh, S.
Srinivasa, E.
Sannappa, J.
Source :: Journal of Radioanalytical & Nuclear Chemistry; Jun2023, Vol. 332 Issue 6, p2379-2388, 10p, 1 Black and White Photograph, 2 Diagrams, 2 Charts, 7 Graphs, 1 Map
Publication Year :: 2023
Abstract: This study reports the <superscript>222</superscript>Rn, <superscript>220</superscript>Rn, and their progeny concentration in Shivamogga district by using SSNTD's based pin hole dosimeters and deposition-based progeny sensor. The average indoor <superscript>222</superscript>Rn and <superscript>220</superscript>Rn concentration varies from 8.14 to 146 Bq m<superscript>−3</superscript> and 13.01 to 157 Bq m<superscript>−3</superscript> with a mean value of 60.61 and 61.77 Bq m<superscript>−3</superscript>. The EEC for <superscript>222</superscript>Rn and <superscript>220</superscript>Rn ranges from 1.55 to 19 Bq m<superscript>−3</superscript> and 0.44 to 6 Bq m<superscript>−3</superscript> with a mean value of 7.29 and 2.66 Bq m<superscript>−3</superscript>. The annual average equilibrium factor for <superscript>222</superscript>Rn is well within the global mean values of 0.4, while the thoron is bit higher than specified global mean values of 0.02. The annual effective dose varies from 0.31 to 2.5 mSvy<superscript>−1</superscript> with a mean value of 1.1 mSvy<superscript>−1</superscript>. [ABSTRACT FROM AUTHOR]

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