中子小角散射谱仪Q分辨率计算和对形状因子影响分析  

Q Resolution Calculation of Small Angle Neutron Scattering Spectrometer and Analysis of Form Factor

作　　者：陈良[1] 彭梅[1] 王燕[1] 孙良卫[1] 陈波[1] 

机构地区：[1]中国工程物理研究院核物理与化学研究所

出　　处：《核电子学与探测技术》2011年第5期530-533,共4页Nuclear Electronics & Detection Technology

基　　金：中国工程物理研究院科学技术基金(2010A0103002)

摘　　要：介绍了中子小角散射谱仪分辨率函数及其相关的Q标准差计算方法,分析了Q标准差有关谱仪的几何布局、中子的波长弥散对其的影响。介绍了一维Q分辨高斯函数计算方法。结合两个具体谱仪布局和一个理想实心球体的形状因子曲线,卷积得到了不同谱仪布局下形状因子的弥散曲线,对精确分析中子小角散射数据,应结合使用谱仪分辨率函数。The calculational methods of Small Angle Neutron Scattering（SANS） spectrometer Q resolution function and its correlative Q standard difference were introduced.The effects of Q standard difference were analysised with the geometry lay out of spectrometer and the spread of neutron wavelength.The one dimension Q resolution Gaussian function were analysised.The form factor curve of ideal solid sphere and two different instrument arrangement parameter was convoluted respectively and the different smearing curve of form factor was obtained.The combination of using the Q resolution function to more accurately analysis SANS data.

关 键 词：中子小角散射谱仪 Q分辨率 形状因子 计算 分析 

分 类 号：O571.56[理学—粒子物理与原子核物理]