Application of fast neutron spectroscopy/radiography to airport security
Application of fast neutron spectroscopy/radiography to airport security
复制标题
快中子能谱/射线照相在机场安全中的应用
DOI：
10.1117/12.138678
复制
发表时间：
1993
影响因子：
16.6
通讯作者：
W. Makky
中科院分区：
文献类型：
--
作者：
T. Miller;W. Makky
正在研究一种基于脉冲快中子能谱的新型机场安检系统。用5 MeV脉冲氘束轰击厚铍靶，由9 Be（d，n）反应产生脉冲“白色中子”源。通过进行取样/取样实验，确定作为中子能量的函数的中子衰减。根据衰减曲线，确定中子束中氢、碳、氮和氧的存在和量。确定这四个要素，就可以很有可能确定爆炸物的存在。
Research is being conducted on a new type airport security system based on pulsed fast neutron spectroscopy. A pulsed 'white neutron' source is produced from the 9Be(d,n) reaction by allowing a pulsed 5 MeV deuteron beam to impinge on a thick beryllium target. By performing sample in/sample out experiments, the neutron attenuation as a function of neutron energy is determined. From the attenuation curves, the presence and amount of hydrogen, carbon, nitrogen and oxygen in the neutron beam is determined. The determination of these four elements allows one to determine with high probability the presence of explosives.