论文标题

通过成像技术在受污染的废物包中进行定位和放射性估计的新方法

A novel approach to the localization and the estimate of radioactivity in contaminated waste packages via imaging techniques

论文作者

Pastena, Michele, Weinhorst, Bastian, Kanisch, Günter, Lezama, Edgar Perez, Ratdke, Johannes, Thomas, Tim

论文摘要

拆除核电站需要生产大量受污染(或可能污染的)材料,其处置至关重要。大多数最终产品必须存储在特殊的存储库中,但可能会遇到一些略微污染或根本不污染的,从而可以释放它们。一种免费释放测量的可能方法使用大型清除监视器,室内被塑料闪烁探测器包围,可以决定清除最多1000公斤的废物包装。由于大型清除率显示器中检测器的复合性质,因此很容易想象可以将3D成像算法应用于废物包装内的放射性源。在这项工作中,我们将展示如何最大化条件信息熵的特殊算法,允许对样品的清除率进行决定。

Dismantling nuclear power plants entails the production of a large amount of contaminated (or potentially contaminated) material whose disposal is of crucial importance. Most of the end products have to be stored in special repositories but it can happen that some of them are slightly contaminated or not contaminated at all, making it possible to free release them. One possible approach to free release measurements uses Large Clearance Monitors, chambers surrounded by plastic scintillation detectors that allow a decision about the clearance of waste packages up to 1000 kg. Due to the composite nature of the detectors in a Large Clearance Monitor, it is easy to imagine that one can apply 3D imaging algorithms to localize radioactive sources inside a waste package. In this work we will show how a special algorithm that maximizes the conditional informational entropy allows decisions about the clearance of portions of the sample.

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