水样品低水平液体闪烁计数测量中不确定度的评估。
The evaluation of uncertainty in low-level LSC measurements of water samples.
作者信息
Rusconi R, Forte M, Caresana M, Bellinzona S, Cazzaniga M T, Sgorbati G
机构信息
ARPA Lombardia, Dipartimento di Milano, via Juvara 22, 20129 Milano, Italy.
出版信息
Appl Radiat Isot. 2006 Oct-Nov;64(10-11):1124-9. doi: 10.1016/j.apradiso.2006.02.006. Epub 2006 Mar 22.
The uncertainty in measurements of gross alpha and beta activities in water samples by liquid scintillation counting with alpha/beta discrimination has been evaluated considering the problems typical of low-level measurements of environmental samples. The use of a pulse shape analysis device to discriminate alpha and beta events introduces a correlation between some of the input quantities, and it has to be considered. Main contributors to total uncertainty have been assessed by specifically designed experimental tests. Results have been fully examined and discussed.
考虑到环境样品低水平测量中的典型问题，对通过具有α/β甄别功能的液体闪烁计数法测量水样中总α和β活度的测量不确定度进行了评估。使用脉冲形状分析装置来甄别α和β事件会在一些输入量之间引入相关性，必须予以考虑。通过专门设计的实验测试评估了总不确定度的主要贡献因素。对结果进行了全面检查和讨论。
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