X射线安全检查技术研究新进展

发布时间：2018-03-03 18:31

  本文选题：安全检查　切入点：X射线成像　出处：《科学通报》2017年13期 　论文类型：期刊论文

【摘要】：暴恐事件的频发严重影响了国际社会的安全和秩序,给客运、货运安全带来了前所未有的挑战.有效打击恐怖活动,保障人身、财产安全,是国内乃至全球公共安全领域的重要诉求.因此,如何通过高技术手段提升安全检查能力,成为人们关注的重要问题和研究热点.随着具有穿透能力的X射线技术的飞速发展,使用X射线对藏匿于货物、行李及人体内外的爆炸物及违禁品进行检查,日益成为目前行之有效的技术手段.特别是近几十年来,利用X射线所具有的多种与物质相互作用机制,研究和发展出多种查验技术,为公共安全提供了重要保障,表现出极其广泛的应用前景.本文对基于X射线的透视成像、散射成像、X-CT成像、能谱成像、衍射XRD、相衬成像等安全检查技术做了全面介绍,针对主要技术的物理机制、应用特点及其研究进展进行了论述,并对新技术的研究及应用作了展望,以期进一步推动X射线技术在公共安全领域发挥更加重要的作用.
[Abstract]:The frequent occurrence of violent terrorist incidents has seriously affected the security and order of the international community and brought unprecedented challenges to the safety of passenger and freight transport. Therefore, how to improve the ability of safety inspection through high-tech means has become an important issue and research hotspot. With the rapid development of X-ray technology with penetrating ability, it is an important demand in the field of public safety in China and even in the world. The use of X-rays to inspect explosives and contraband hidden inside and outside cargo, luggage and human bodies has increasingly become an effective technical means at present, especially in recent decades. By using the mechanism of interaction between X ray and matter, a variety of identification techniques have been studied and developed, which provide an important guarantee for public safety and show a very wide application prospect. In this paper, the perspective imaging based on X ray is studied. Scattering imaging X-CT imaging, energy spectrum imaging, diffractive XRD, phase contrast imaging and other safety inspection techniques are introduced. The physical mechanism, application characteristics and research progress of the main techniques are discussed. The research and application of new technology are prospected in order to promote the more important role of X-ray technology in the field of public safety.
【作者单位】： 清华大学工程物理系;粒子技术与辐射成像教育部重点实验室(清华大学);
【基金】：国家杰出青年科学基金(11525521) 国家自然科学基金重点项目(11435007,11235007) 国家重大科学仪器设备开发专项(2012YQ140037)资助
【分类号】：D035.39;O434.19
，

本文编号：1562194