doi:10.12202/j.0476-0301.2019291王鑫^{1, 2, 3,},
王曌^{1, 2, 3},
王浩然^{1, 2, 3},
刘志国^{1, 2, 3,,}
1.北京师范大学核科学与技术学院，100875 ，北京
2.北京师范大学射线束技术教育部重点实验室，100875， 北京
3.北京市辐射中心，100875， 北京

详细信息

通讯作者:刘志国（1970—)，男，教授级高工，博士。研究方向：导管X光学、核仪器仪表。e-mail：liuzhiguo512@hotmail.com

中图分类号:TL812+.2

计量

文章访问数:148
HTML全文浏览量:56
PDF下载量:6
被引次数:0

出版历程

收稿日期:2019-10-23
网络出版日期:2020-09-08
刊出日期:2020-08-25

Geant 4 and imaging of capillary array filled with liquid scintillant

Xin WANG^{1, 2, 3,},
Zhao WANG^{1, 2, 3},
Haoran WANG^{1, 2, 3},
Zhiguo LIU^{1, 2, 3,,}
1. College of Nuclear Science and Technology, Beijing Normal University, 100875, Beijing, China
2. Key Laboratory of Beam Technology of Ministry of Education, Beijing Normal University, 100875, Beijing, China
3. Beijing Radiation Center, 100875, Beijing, China



摘要
HTML全文
图(6)表(1)
参考文献(20)
相关文章
施引文献
资源附件(0)
访问统计

摘要
摘要:基于蒙特卡罗方法的模拟程序Geant 4，分析了填充液闪毛细管阵列长度、子管截面形状、阵列层数等关键参数，给出了针对实验室X光源的毛细管阵列最优化设计；还分析了不同射线入射方向、有无吸光体对毛细管阵列成像的影响；开展了X射线对铝片透射成像的模拟实验，结果表明毛细管阵列能应用于微米量级X射线透射成像.
关键词:蒙特卡罗模拟/
液闪/
毛细管阵列/
成像
Abstract:Simulation program Geant 4 based on Monte Carlo method was used to analyze key parameters (length, shape and layers) of capillary array filled with liquid scintillant. Optimal design of capillary array for laboratory X-ray tubes was obtained. Influence of incident direction and absorber on capillary array imaging was analyzed. Imaging of parallel incidence of X-ray was found to be better than a conical incidence angle of 60-degree, also absorber must be added between individual capillaries to reduce crosstalk and to improve resolution. Simulation experiment on X-ray transmission imaging of aluminum plate was carried out. Capillary array filled with liquid scintillant was found to be able to obtain aluminum profile information, and obtain thickness information of aluminum plate according to the law of X-ray attenuation. Since the inner diameter of a single capillary can be down to micrometers, this coupled with high-resolution optical detection, capillary array could be applied to X-ray transmission imaging at micrometer scale.
Key words:Monte Carlo simulation/
liquid scintillation/
capillaries array/
imaging