| 数值模拟快中子针孔成像系统的PSF |
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| 引用本文： | 唐世彪,马庆力,邹继伟.数值模拟快中子针孔成像系统的PSF[J].原子核物理评论,2008,25(2):139-143. |
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| 作者姓名： | 唐世彪 马庆力 邹继伟 |
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| 作者单位： | 1 中国科学技术大学近代物理系, 安徽 合肥 230026;2 电子工程学院电子系, 安徽 合肥 230037;3 电子工程学院科研处, 合肥 安徽 230038 |
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| 摘 要： | 采用蒙特卡罗方法对中子针孔成像系统进行了点扩展函数（PSF）的模拟研究， 利用高斯拟合的数学方法分析比较了几种不同条件下该系统的PSF。 研究结果表明， 在偏离量较小时， 利用高斯拟合得到的中子针孔成像系统的PSF是可行的， 而采用挡板可以很显著地减少拟合误差和提高其空间分辨率。 The point spread function (PSF) of a pinhole imaging system for fast neutron has been studied through Monte Carlo method. The PSFs under different conditions have been obtained and analyzed by fitting the simulating data with Gauss function. As the results show， when the excursion is little， the PSF obtained by Gauss function fitting is feasible. A baffle will reduce the error and improve the spatial resolution remarkably.
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| 关 键 词： | 针孔成像 点扩展函数 Geant4 |
| 文章编号： | 1007-4627(2008)02-0139-05 |
| 收稿时间： | 1900-01-01 |
| 修稿时间： | 2007年10月11 |
Numerical Simulation on PSF of Pinhole Imaging System for Fast Neutron |
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| TANG Shi-biao,MA Qing-li,ZOU Ji-wei.Numerical Simulation on PSF of Pinhole Imaging System for Fast Neutron[J].Nuclear Physics Review,2008,25(2):139-143. |
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| Authors: | TANG Shi-biao MA Qing-li ZOU Ji-wei |
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| Institution: | 1 Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China;2 Department of Electronics, Electronic Engineering Institute, Hefei 230038, China;3 Department of Scientific Research, Electronic Engineering Institute, Hefei 230038, China |
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| Abstract: | The point spread function (PSF) of a pinhole imaging system for fast neutron has been studied through Monte Carlo method. The PSFs under different conditions have been obtained and analyzed by fitting the simulating data with Gauss function. As the results show， when the excursion is little， the PSF obtained by Gauss function fitting is feasible. A baffle will reduce the error and improve the spatial resolution remarkably. |
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