| 凸度测量过程中点扩展函数的蒙特卡罗模拟与解析表达研究 | |
| 胡克敏 ; 吴志芳 ; 苗积臣 ; 谈春明 ; HU Ke-min ; WU Zhi-fang ; MIAO Ji-chen ; TAN Chun-ming | |
| 2016-03-30 ; 2016-03-30 | |
| 关键词 | 点扩展函数 凸度测量 散射校正 isotope separation lithium isotope separation photochemical reaction laser absorption spectrometry difference circuit TG334.9 |
| 其他题名 | Research on Monte Carlo Simulation and Analytic Expression of Point Spread Function in Crown Measurement |
| 中文摘要 | 散射校正是高精度凸度测量中的技术难点。本文采用点扩展函数(PSF)理想模型估计的方法,建立了点扩展函数的蒙特卡罗(MC)计算模型,分析了PSF随射线能量和钢板厚度的变化关系,并提出用多个单能的线性组合来代替连续能谱计算的方法,取得了较好的效果。采用双高斯函数模型,结合蒙特卡罗模拟的计算结果,对凸度测量系统的单能点扩展函数进行了解析求解,并给出0.18MeV射线下,凸度测量系统PSF的解析公式,为凸度测量系统的散射校正奠定了基础。; The scattering correction is the key topics of high-precision crown measurement.In this paper,the theoretical model estimated method of point spread function(PSF)was used.First,the PSF Monte Carlo(MC)model was established to analyze the changes in the relationship of PSF with the source energy and the plate thickness.The calculation method with the results of several single energy was put forward to replace the spectrum calculation,and achieved good results.Then with the doubleGaussian model,combining MC simulation result,the PSF of crown measurement system under single energy source was analytically solved.And PSF theory formula under0.18 MeV source energy was given,which lay the groundwork for the scattering correction of crown measurement system. |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/143965]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 胡克敏,吴志芳,苗积臣,等. 凸度测量过程中点扩展函数的蒙特卡罗模拟与解析表达研究[J],2016, 2016. |
| APA | 胡克敏.,吴志芳.,苗积臣.,谈春明.,HU Ke-min.,...&TAN Chun-ming.(2016).凸度测量过程中点扩展函数的蒙特卡罗模拟与解析表达研究.. |
| MLA | 胡克敏,et al."凸度测量过程中点扩展函数的蒙特卡罗模拟与解析表达研究".(2016). |
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