Simulation analysis of electron imaging method based onMonte Carlo simulation and particle tracer software
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摘要: 借助理论分析和数值模拟,设计了基于高能电子束团的辐射成像系统,并通过Geant4和GPT软件对成像系统的相关参数进行了优化。模拟中分析了影响系统空间分辨率及物质厚度分辨率的因素,结果显示,模拟中设计的成像系统空间分辨率达到m量级,并且具有一定的厚度分辨能力。该设计指标满足对一定厚度及结构的样品进行成像的要求。Abstract: We designed the radiography imaging system based on the high energy electron beam using theoretical analysis and numerical simulation, and optimized the parameters using Geant4 and GPT software. In the simulation we analyzed the parameters which affect the system space resolution and areal density resolution. With the ability to resolve the thickness of the sample, the result shows that the method can reach space resolution of m. It proves that the design satisfies the demand to image the sample of certain thickness and structure.
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Key words:
- electron imaging /
- angular distribution /
- transmission matrix /
- optical aberration
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