印度芒格洛尔地区高本底辐射区域的伽马剂量率
GAMMA DOSE RATES IN THE HIGH BACKGROUND RADIATION AREA OF MANGALORE REGION, INDIA.
作者信息
Al-Azmi Darwish, Kumara Sudeep, Mohan M P, Karunakara N
机构信息
Department of Applied Sciences, College of Technological Studies, Public Authority for Applied Education and Training, Shuwaikh, P.O. Box 42325, Code, Kuwait.
Center for Advanced Research in Environmental Radioactivity (CARER), Mangalore University, Mangalagangothri, India.
出版信息
Radiat Prot Dosimetry. 2019 Oct 1;184(3-4):290-293. doi: 10.1093/rpd/ncz063.
Elevated levels of natural background radiation due to scattered patches of monazite sand around the beaches of Mangalore, India, have been reported earlier. A comparative study of gamma dose rates was performed in both normal background and high natural background radiation areas around Mangalore using different types of portable gamma dosimeters. In addition to this, gamma-ray energy spectra were acquired, in situ, using a NaI(Tl) based portable gamma spectrometer. Soil and sand samples were collected for laboratory analysis with HPGe detectors. Measurements were carried out during the years 2016-18 revealed that in majority of the locations the gamma dose rates were similar to the normal background regions, whereas, in certain locations the dose rates were higher with values up to 530 nSv/h.
早前有报道称，印度芒格洛尔海滩周围因独居石砂散布而导致自然本底辐射水平升高。使用不同类型的便携式伽马剂量计，在芒格洛尔周围的正常本底和高自然本底辐射区域进行了伽马剂量率的比较研究。除此之外，还使用基于碘化钠（铊）的便携式伽马能谱仪现场获取了伽马射线能谱。采集了土壤和沙子样本，用高纯锗探测器进行实验室分析。2016年至2018年期间进行的测量表明，在大多数地点，伽马剂量率与正常本底区域相似，然而，在某些地点，剂量率较高，高达530纳希弗/小时。
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