首页> 外文期刊>Radiation Protection Dosimetry >ENVIRONMENTAL GAMMA RADIATION AND NATURAL RADIOACTIVITY IN SOILS IN CENTRO EXPERIMENTAL ARAMAR (CTMSP-BRAZIL) AND REGION
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ENVIRONMENTAL GAMMA RADIATION AND NATURAL RADIOACTIVITY IN SOILS IN CENTRO EXPERIMENTAL ARAMAR (CTMSP-BRAZIL) AND REGION

机译:巴西中央实验场(CTMSP)和该地区土壤的环境γ辐射和自然放射性

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The experimental results are described obtained with CaF_2Dy thermoluminescence dosementers (TLD-200) for the measurement of natural outdoor gamma radiation background and by the gamma spectrometry technique on soil samples to determine natural radioactivity in Centro Experimental Aramar (CTMSP-Brazil) and surroundings, from 1989 to 1997. The Centro Technologico da Marinha (CTMSP) is a military research organisation, located in S.Paulo city (Brazil), whose objectives are to develop nuclear and energy systems for Brazilian Naval Ship propulsion. The estimated average outdoor gamma dose rate in air is 405±71 μGy.y~-1. The estimated average values obtained for radionuclides of the natural series are 44±6 Bq.kg~-1 for ~214Pb (~238U series), 58±20 Bq.kg~-1 for ~228Ac (232Th series), and 131±40 Bq.kg~-1 for ~40K. These values are compared with background values of other places in the world, and indicate a low outdoor gamma dose rate in air and low natural radioactivity in soil samples in Centro Experimental Aramar and region.
机译:描述了使用CaF_2Dy热致发光剂量计(TLD-200)来测量自然室外伽玛辐射背景以及通过伽马能谱技术对土壤样品进行测定以测定Centro Experiment Aramar(CTMSP-Brazil)和周围环境的自然放射性的实验结果。 1989年至1997年。Marinha技术中心(CTMSP)是一家军事研究机构,位于巴西圣保罗市,其目标是为巴西海军舰船推进开发核能和能源系统。估计的空气中室外平均伽马剂量率为405±71μGy.y〜-1。对于〜214Pb(〜238U系列),天然系列放射性核素的估计平均值为44±6 Bq.kg〜-1;对于〜228Ac(232Th系列),天然系列放射性核素的平均值为58±20 Bq.kg〜-1 40 Bq.kg〜-1约40K。这些值与世界其​​他地方的背景值进行了比较,表明在Centro实验阿拉木图及该地区的空气中,室外伽玛剂量率较低,土壤样品中的自然放射性较低。

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