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Baseline studies of terrestrial outdoor Gamma Dose rate levels in nigheria

机译:尼日利亚地面室外γ剂量率水平的基线研究

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The outdoor γ radiation exposure dose rates due to the radioactivity concentration of ~40K, ~238U and ~232Th in the soil across different environment sin Nigeria have been carried out using the low-cost method of in situ γ ray spectrometry. Measure- ments were made in 18 cities, spread across the three major zones of the country. The radioactivity concentrations of these radionuclides in the soil were used to determine their γradiation absorbed doe rates in the air. The range of average total dose rate due to the three radionuclides in the Eastern zone is between 0.025 and 0.081 μGy.h~-1 with an average of 0.040±0.006 μGy.h~-1, 0.041 and 0.214 μGy.h~-1 with a mean of 0.089±0.014 μGy.h~-1 for the Western zone and between 0.066 and 0.222 μGy.h~-1 with a mean of 0.102±0.032 μGy.h~-1 for the Northern zone.
机译:由于尼日利亚不同环境中土壤中〜40K,〜238U和〜232Th的放射性浓度而导致的室外γ辐射暴露剂量率已使用低成本的原位γ射线光谱法进行了测定。在全国三个主要地区的18个城市进行了测量。这些放射性核素在土壤中的放射性浓度用于确定其在空气中的γ辐射吸收的母鹿比率。东部区域三种放射性核素引起的平均总剂量率范围在0.025至0.081μGy.h〜-1之间,平均为0.040±0.006μGy.h〜-1、0.041至0.214μGy.h〜-1西部区域的平均值为0.089±0.014μGy.h〜-1,北部区域的平均值为0.066至0.222μGy.h〜-1,北部区域的平均值为0.102±0.032μGy.h〜-1。

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