Muon scattering imaging technique based on Moliere multiple scattering theory can be used to analyze the internal element distribution of the material and determine the atomic number.Compared with the high energy cosmic ray muon,the energy of the muon beam generated by accelerator targeting is low(about 45～450 MeVc-1),and the applicability of Moliere multiple scattering theory needs to be explored.In this paper,we study the Coulomb scattering process in this energy region,analyze the root mean square distribution of the scattering angle,and reconstruct the simulation results through the scattering imaging algorithm.The results show that the scattering of low energy muons is closely related to the size of the imaging object,The 400 MeV muon beam scattering imaging technique can only be used for W,Si and Na materials whose thickness is less than 9.78 mm,56.9 mm and 140.7 mm,respectively,and the distribution information of elements inside the target can be accurately obtained.The research results can guide the application of Moliere multiple scattering theory in muon scattering imaging technology in this energy region,and lay a foundation for the research of muon in small size nuclear material detection,cultural relics imaging and other fields.
关键词
库仑散射成像/缪子散射/Geant4/Moliere理论/元素分布
Key words
coulomb scattering imaging/muon scattering/Geant4/Moliere theory/element distribution
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