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首页> 外文期刊>World Journal of Nuclear Science and Technology >Modelling Natural Radioactivity in Sand Beaches of Guarapari, Espírito Santo State, Brazil
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Modelling Natural Radioactivity in Sand Beaches of Guarapari, Espírito Santo State, Brazil

机译：模拟巴西圣埃斯皮里图瓜拉帕里沙滩的自然放射性

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摘要

Using gamma-ray spectrometry, the activity concentration of naturally occurring radionuclides 226Ra, 212Pb, 214Pb, 232Th, and 40K was determined in sand beaches samples from different areas in Guarapari, Espírito Santo state, from Brazil. The absorbed dose rates and annual effective dose were calculated and the results were compared with the internationally accepted values as well as others high background radiation areas (HBRAs). The activity concentration of the 232Th in Areia Preta as well as the absorbed dose rates and annual effective dose were higher than the others regions compared. The results show that Areia Preta in Guarapari has higher background found in beaches in world. This work is part of a research project for the natural background determination of the Brazilian coast.
机译：使用伽马射线光谱法，在巴西圣埃斯皮里图州瓜拉帕里不同地区的沙滩样品中测定了天然放射性核素226Ra，212Pb，214Pb，232Th和40K的活性浓度。计算吸收剂量率和年有效剂量，并将结果与​​国际公认的值以及其他高本底辐射区域（HBRAs）进行比较。相比之下，Areia Preta 232Th的活性浓度以及吸收剂量率和年有效剂量均高于其他地区。结果表明，瓜拉帕里的Areia Preta在世界海滩上发现的背景更高。这项工作是巴西海岸自然背景确定研究项目的一部分。

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