Radiological Effects of Soil and Rock Samples of Different Libyan Regions
- 1 Faculty of Technical Electronic, Tripoli, Libya
- 2 Experimental Nuclear Physics Department, NRC, EAEA, Cairo, Egypt
- 3 Department of Physics, Zagazig University, Zagazig, Egypt
- 4 Department of Physics, Zagazig University, Zagazig, Egypt
Abstract
The activity concentration of natural radioactivity for soil samples collected from western and mid Libyan regions were measured using HPGe detector. The average activity concentration of 226 Ra, 232 Th and 40 K for ten regions was found to be 51.86 ± 7.14, 75.56 ± 10.95 and 128.98 ± 6.88 Bq/kg respectively. The results obtained for the corresponding nuclides 226 Ra and 232 Th are above the worldwide average values (35 and 30 Bq/kg) while 40 K was smaller than worldwide average (400 Bq/kg). The average outdoor absorbed dose and the annual effective dose rates due to 226 Ra, 232 Th and 40 K were observed to be 21.51 ± 2.93 nGy/h and 0.297 ±.03 mSv/y respectively, which are lower than world average values (60 nGy/h and 0.8 mSv/y). The radium equivalent activity and external hazard indices were found less than the world wide average values.
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