Detecting small low emission radiating sources
Detecting small low emission radiating sources
复制标题
检测小型低辐射辐射源
DOI：
10.3934/ipi.2013.7.47
复制
发表时间：
2010
影响因子：
1.3
通讯作者：
P. Kuchment
中科院分区：
文献类型：
--
作者：
M. Allmaras;David Darrow;Y. Hristova;G. Kanschat;P. Kuchment
为了防止高浓缩核材料流入
在边境检查站，需要新的先进检测方案，
开发在这方面面临的典型问题是，
相对于占主导地位的自然背景辐射的低发射。来源
预计会很小，被屏蔽，因此无法从
仅测量辐射水平。
我们认为准直和康普顿型测量，并提出了一个检测
一种依赖于小源的几何奇异性，
将它们与更均匀的背景区分开来。
该方法具有灵敏度高、特异性强的特点，
允许分配检测的置信概率。
我们的方法的有效性可以证明使用的属性
医学成像的相关技术。的数值
模拟准直和康普顿型测量。
2D的情况下被认为是详细的。
In order to prevent influx of highly enriched nuclear material
throu-gh border checkpoints, new advanced detection schemes need to be
developed. Typical issues faced in this context are sources with very
low emission against a dominating natural background radiation. Sources
are expected to be small and shielded and hence cannot be detected from
measurements of radiation levels alone.
We consider collimated and Compton-type measurements and propose a detection
method that relies on the geometric singularity of small sources to
distinguish them from the more uniform background.
The method is characterized by high sensitivity and specificity and
allows for assigning confidence probabilities of detection.
The validity of our approach can be justified using properties of
related techniques from medical imaging. Results of numerical
simulations are presented for collimated and Compton-type measurements.
The 2D case is considered in detail.
影响因子：
3.8
作者：
M. Singh
通讯作者：
M. Singh
用于单光子发射计算机断层扫描的电子准直伽马相机。
影响因子：
3.8
作者：
Singh,M;Doria,D
通讯作者：
Doria,D