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Radon level and indoor gamma doses in dwellings of Trabzon, Turkey
A Kurnaz1, B Küçükömeroğlu, U Cevik
1Department of Physics, Faculty of Sciences, Karadeniz Technical University, Trabzon, Turkey.
Abstract:
The seasonal variations of the indoor radon activity concentrations were determined in the 97 dwellings of Trabzon, Turkey. The annual average indoor radon activity concentration varied from 8 to 583 Bq/m³. The average winter/summer ratio of radon activity concentrations was 3.62. The gamma activity concentrations in the soil samples were determined as 41, 38, 443 and 25 Bq/kg for ²²⁶Ra, ²³²Th, ⁴⁰K and ¹³⁷Cs, respectively. The average gamma dose rate in air and the annual effective dose equivalent for outdoor occupancy were calculated as 63 nGy/h and 77 μSv/y, respectively.
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