Radioactivity measurement and dose rate calculation due to γ-ray of soil from Chashnikovo - Russia

Using γ-ray spectrometer, radioactivity from NORM samples of soils were collected and measured from Chashnikovo- Russia. The content of the three main NORM radionuclides (Ra-226, Th-232 and K-40) were measured and radiocaesium -137. The radioactivity was measured in two selected sections. The depth of each one was about 50 cm depth and the radioactivity of the three main NORM radionuclides and radiocaesium were measured. In first section, the results shows that the average value of the radioactivity of Ra-226, Th-232, K-40 and Cs-137 is 26.89± 2.62, 33.03 ± 4.21, 557.40 ± 84.20 and 12.87 ± 10.11 Bq/kg, respectively. On the other hand, in the second section, the obtained results of the radioactivity of the same radionuclides is 20.68 ± 3.93, 17.44 ± 6.10, 448.64 ± 54.91 Bq/kg, respectively. The research shows that the mean value of the obtained results of the NORM radionuclides within the worldwide range for soil. The absorbed dose rates, annual effective dose in air outdoor and indoor were calculated.