快中子照相属无损检测中射线检测部分,利用物质的截面差进行成像。与热中子照相相比,由于快中子能穿过cm量级的重金属物质实现对轻物质的探测,该技术已成为各国竞相研究的热点,美国能源部将该技术列为核武库安全检测最有效途径之一。由于该技术刚兴起,急需建立一套实用的技术指标体系。目前我室在2014年建成了一套基于CCD的快中子数字化成像系统,正针对特定材料开展快中子照相反差灵敏度与 Fast neutron photographic non-destructive testing of ray detection part, the use of material cross-section imaging poor. Compared with thermal neutron photography, fast neutrons can detect light substances through centimeter-level heavy metals. This technique has become a hot research topic in many countries. The US Department of Energy lists the technology as a nuclear arsenal safety inspection One of the most effective ways. As the technology is just emerging, it is urgent to establish a set of practical technical index system. At present, our office built a set of CCD-based fast neutron digital imaging system in 2014, and is developing fast neutron contrast sensitivity and