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一个移动的马射线LaBr₃(Ce) 探测器单元,用于在TENORM污染地点进行现场放射性核素分析

F van Niekerk¹, P Jones², S Woodborne³

¹iThemba Laboratory for Accelerator Based Sciences, PO Box 722, Somerset West, 7129, South Africa; Department of Physics, Stellenbosch University, PO Box X1, Matieland, 7602, South Africa.

Journal of environmental radioactivity

|August 8, 2025

概括

一个带有甲 (LaBr3(Ce)) 探测器的移动辐射检测装置 (MRDU) 在恶劣环境中有效测量了高含量. 这项技术克服了环境辐射监测的先前访问限制.

科学领域:

环境科学环境科学
核地质物理学核地质物理学
放射学测量放射学测量放射学测量

背景情况:

使用NaI(Tl) 探测器进行马射线光谱测量是地面放射性核素测量的标准.
兰他化物 (LaBr3(Ce)) 探测器提供了更好的性能,但在部署方面受到限制.
限制进入敌对,高辐射环境进行监测.

研究的目的:

为了证明一个移动辐射检测装置 (MRDU) 在恶劣环境中具有LaBr3(Ce) 探测器的有效性.
评估一个具有历史开采的地区的活动和不平衡.
为了克服传统基于车辆的辐射检测的局限性.

主要方法:

部署一个配备了LaBr3(Ce) 探测器的移动辐射检测装置 (MRDU).
使用玛射线光谱法测量陆地样本中的活性.
将玛辐射结果与度的化学分析进行比较.
对不平衡的研究.

主要成果:

在1764.5 keV时,MRDU实现了236 (16) Bq/kg的最低可检测活动.
在Welverdiend农业企业中,活动量为6477 Bq/kg.
对比证实了在玛辐射和化学分析之间存在不平衡.

结论:

带有LaBr3(Ce) 探测器的MRDU在具有挑战性的位置有效监测环境辐射.
该研究证实了Welverdiend现场的含量升高和不平衡.
这项技术扩大了在以前无法进入的区域进行放射性评估的能力.

关键词:

化学平衡化学平衡化学平衡玛射线光谱测量玛射线光谱拉布尔 (LaBr) 的探测器移动辐射检测装置 (MRDU) 是一种移动辐射检测装置.自然存在的放射性核酸.

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