Yadav Jyoti, Parkash Rajat, Khyalia Bhupesh, Chauhan R P, Singh Pushpendra P, Singh Paramjeet, Dalal Ranjeet
Centre of Radio Ecology & Department of Physics, Guru Jambheshwar University of Science and Technology, Hisar, Haryana, 125001, India.
Department of Physics, National Institute of Technology, Kurukshetra, Kurukshetra, Haryana, 136119, India.
J Environ Radioact. 2024 Dec;280:107552. doi: 10.1016/j.jenvrad.2024.107552. Epub 2024 Oct 15.
This study analyses the natural radionuclides concentration (Ra and Th) along with the radon and thoron exhalation rates in 50 soil samples collected from the Manali-Leh Highway region of the Himalayas. The specific activity of Ra and Th radionuclides was determined using a NaI(Tl) detector, revealing that the concentration values of these radionuclides are lower than the global average. The radon and thoron exhalation rates in the soil samples were measured utilizing a SMART RnDuo detector. The radon mass exhalation rates range from 6 to 87 mBq kg h, with average values of 25 mBq kg h. The thoron surface exhalation rates vary from 110 to 757 Bq m h, with a mean value of 385 Bq m h. Additionally, the emanation coefficient and alpha dose equivalent for radon were calculated and the correlation between parent and daughter radionuclides was also explored.
本研究分析了从喜马拉雅山脉马纳利 - 列城公路地区采集的50个土壤样本中的天然放射性核素浓度（镭和钍）以及氡和钍射气率。使用碘化钠（铊）探测器测定了镭和钍放射性核素的比活度，结果表明这些放射性核素的浓度值低于全球平均水平。利用SMART RnDuo探测器测量了土壤样本中的氡和钍射气率。氡的质量射气率范围为6至87毫贝克勒尔每千克小时，平均值为25毫贝克勒尔每千克小时。钍的表面射气率在110至757贝克勒尔每平方米小时之间变化，平均值为385贝克勒尔每平方米小时。此外，还计算了氡的发射系数和α剂量当量，并探讨了母体和子体放射性核素之间的相关性。
