Natural radioactivity studies of Bidar soil samples using gamma spectrometry |
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| Authors: | T Rajeshwari S Rajesh B R Kerur S Anilkumar Narayani Krishnan Amar D Pant |
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| Institution: | 1. Department of Physics, Gulbarga University, Gulbarga, 585 106, Karnataka, India
2. Radiation Safety Systems Division, Bhabha Atomic Research Centre, Mumbai, 400 085, India
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| Abstract: | The activity of the terrestrial primordial radionuclides 226Ra, 232Th and 40K are measured for Bidar soil samples. The collected soil samples are analyzed using HPGe detector based on high resolution gamma spectrometric system. The activity of the three radionuclides 226Ra, 232Th and 40K were found to be in the range of BDL–47.68, 7.65–59.08 and BDL–260.65 Bq kg?1 respectively. The mean gamma absorbed dose rate in air above 1 m from ground is estimated to be 34.47 nGy h?1. Annual effective dose equivalent and the radium equivalent activity were within the limits in the present study and it is found that the activity of the radionuclides are comparable with the worldwide literature values. Also the external hazard indices for the soil samples of Bidar district were within the limit of unity. |
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