摘要
热中子照相技术在检测含氢材料、重金属样品等方面是X射线等其它无损检测技术的有益补充,热中子层析技术研究在国内尚是空白,实验研究条件欠缺且代价高昂,通过仿真研究再过渡到实验研究,将有效降低研究成本,提高研究效率。文章根据中子层析照相基本原理,设计模拟样品,采用MCNP仿真计算的方法获取了样品中子投影图像,利用C++Builder研发中子层析数据获取程序和反投影滤波算法层析重建程序,重建了样品二维断面图像,样品二维断面图像与实际样品一致,证明了所采用的仿真研究流程合理可行,为中子层析照相技术的深入研究奠定了基础。
Thermal neutron radiography is a useful complementarily of the other non-destructive testing methods for the hydrogenous materials and heaw metal subassembly, and thermal neutron tomography has not been developed in China. The experimental condition is not enough and its price is high so the simulation method is necessary before experimental study to improve study efficiency. According to the principle of the thermal tomography, two sample with holes are designed, and its projecting image or dates of thermal radiography are gotten by MCNP method. The tomography image is gotten by the filter anti-projection by the program developed by C＋＋Builder. The tomography image reveals the basic structure of the sample and it approves that the simulation method and its flow is feasible. It is ready for further study of neutron tomography.
出处
《核电子学与探测技术》
CAS
CSCD
北大核心
2009年第1期84-88,共5页
Nuclear Electronics & Detection Technology
基金
中国工程物理研究院发展基金资助项目
关键词
热中子
CT实验
分析
thermal neutron
tomography
experiment
analysis
