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Collimated Detector Technique for Measuring a↑(137)Cs Deposit in Soil under a Clean Protected Layer

机译:清洁保护层下土壤中↑(137)Cs沉积物的准直检测器技术

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摘要

A method to determine the↑(137)Cs soil deposit in situ where the contamination is covered by a clean soil layer is described. The method is based on measurements of the count rates in three energy ranges by a collimated spectrum sensitive detector and their processing. The deposit determination accuracy is 20%. The measurement results are presented and compared with data from soil sampling. The↑(137)Cs contamination maps of areas in Belarus and the Chelyabinsk region of Russia are presented. Measurements of the river Techa bank contamination detected the presence of secondary contamination. This method permits the change of dose rate after land decontamination and the work needed for decontamination and its efficiency to be predicted. # 1997 Elsevier Science Ltd. All rights reserved
机译:描述了一种在污染被干净的土壤层覆盖的原位确定↑(137)Cs土壤沉积物的方法。该方法基于准直频谱敏感检测器在三个能量范围内对计数率的测量及其处理。沉积物确定精度为20%。给出测量结果并与土壤采样数据进行比较。给出了白俄罗斯和俄罗斯车里雅宾斯克州地区的↑(137)Cs污染图。对Techa河沿岸污染的测量结果检测到存在二次污染。这种方法可以在土地净化后改变剂量率,并可以预测净化所需的工作及其效率。 #1997 Elsevier Science Ltd.保留所有权利

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