宇宙射线μ子探测裂变核材料的成像算法

摘要

宇宙射线μ子探测作为一种清洁源、深穿透、真正识别裂变核材料的新方法正在世界范围内日益受到重视,我国也在反恐领域开展此项研究,论文介绍了研究工作中图像重建算法(PoCA算法、期望最大化算法)以及算法模拟实验结果和分析,模拟结果初步证明了宇宙线μ子进行特殊核材料检测的可行性以及图像重建算法的有效性.%Muon Tomography is a novel technique which exploits the multiple coulomb scattering of these particles for nondestructive inspection without the use of artificial radiation. It describes the concept and theory of cosmic - ray muon tomography, and discuss preliminary and advanced reconstruction algorithms ( PoCA algorithm and MLS - EM algorithm) .which take advantage of the scattering angle. Our algorithms are validated with simulation experimental demonstrations. Based upon the results from simulations, we conclude that muon radiography can be useful for detecting fissile nuclear materials.