【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。更多还原

【Abstract】 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.更多还原