Characterising encapsulated nuclear waste using cosmic-ray muon tomography
Characterising encapsulated nuclear waste using cosmic-ray muon tomography
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DOI：
10.1088/1748-0221/10/03/p03020
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发表时间：
2015-03-01
影响因子：
1.3
通讯作者：
Zimmerman, C.
中科院分区：
文献类型：
--
作者：
Clarkson, A.;Hamilton, D. J.;Zimmerman, C.
使用宇宙射线μ子的库仑散射的层析成像技术先前已被证明可以成功地识别和识别空气基质中的低Z和高Z材料，并使用原型反射纤维跟踪器系统。这些研究是一系列研究中的第一项，旨在评估该技术和图像重建技术在表征英国遗留核废料容器的潜在高Z含量方面的可行性。核工业。目前的工作继续进行可行性研究，并提出了第一个图像重建的实验数据收集使用这个小规模的原型系统的低和高Z材料封装在一个混凝土填充的不锈钢容器。在厚钢套管、混凝土基质和所分析的样品材料之间观察到明显的区别。这些重建的对象，并详细讨论了未来的工业场景的影响。
Tomographic imaging techniques using the Coulomb scattering of cosmic-ray muons have been shown previously to successfully identify and characterise low- and high-Z materials within an air matrix using a prototype scintillating-fibre tracker system. Those studies were performed as the first in a series to assess the feasibility of this technology and image reconstruction techniques in characterising the potential high-Z contents of legacy nuclear waste containers for the U.K. Nuclear Industry. The present work continues the feasibility study and presents the first images reconstructed from experimental data collected using this small-scale prototype system of low- and high-Z materials encapsulated within a concrete-filled stainless-steel container. Clear discrimination is observed between the thick steel casing, the concrete matrix and the sample materials assayed. These reconstructed objects are presented and discussed in detail alongside the implications for future industrial scenarios.