A novel 4D resolution imaging method for low and medium atomic number objects at the centimeter scale by coincidence detection technique of cosmic-ray muon and its secondary particles

• 作者: Xuan-Tao Ji Si-Yuan Luo Yu-He Huang Kun Zhu Jin Zhu Xiao-Yu Peng Min Xiao Xiao-Dong Wang
• 来源期刊: 核技术（英文版）
• 年，卷（期）: 2022,（1）
• 所属期刊栏目: NUCLEAR ELECTRONICS AND INSTRUMENTATION
• 页码范围: 13-23
• 页数: 11页
• 语种: 英文

摘要

The muon radiography imaging technique for high-atomic-number objects (Z) and large-volume objects via muon transmission imaging and muon multiple scat-tering imaging remains a popular topic in the field of radiation detection imaging.However,few imaging studies have been reported on low and medium Z objects at the centimeter scale.This paper presents an imaging system that consists of three layers of a position-sensitive detector and four plastic scintillation detectors.It acquires data by coincidence detection technique of cosmic-ray muon and its secondary particles.A 3D imaging algorithm based on the density of the coinciding muon trajectory was devel-oped,and 4D imaging that takes the atomic number dimension into account by considering the secondary par-ticle ratio information was achieved.The resultant recon-structed 3D images could distinguish between a series of cubes with 5-mm-side lengths and 2-mm-intervals.If the imaging time is more than 20 days,this method can dis-tinguish intervals with a width of 1 mm.The 4D images can specify target objects with low,medium,and high Z values.