Use of neutron tomography for airline security
Use of neutron tomography for airline security
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使用中子断层扫描确保航空安全
DOI：
10.1117/12.172501
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
T. Miller
中科院分区：
文献类型：
--
作者：
T. Miller
快中子衰减系统使用白中子源和脉冲快中子能谱与中子层析成像一起，通过密封容器获得指定切口处的氢、碳、氮和氧（H、C、N和O）浓度。通过组合多个切口，可以获得整个体积的H、C、N和O数密度的3D图。从四个数字密度中得到三个独立的比率C/O， N/O和H/C，并用于神经网络程序来预测密封容器中爆炸物和毒品的存在。
A fast neutron attenuation system that uses a white neutron source and pulsed fast neutron spectroscopy has been used along with neutron tomography to obtain the hydrogen, carbon, nitrogen, and oxygen (H, C, N and O) concentrations at specified cuts through sealed containers. A 3D plot of the H, C, N and O number density can be obtained throughout the volume by combining a number of cuts. Three independent ratios C/O, N/O and H/C are obtained from the four number densities and used in a neural network program to predict the presence of explosives and drugs in sealed containers.