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.
出处
《原子核物理评论》
CAS
CSCD
北大核心
2008年第2期139-143,共5页
Nuclear Physics Review
基金
国家自然科学基金资助项目(60602065)~~
