The conventional Rutherford elastic scattering model is not suitable to describe the elastic interaction between electron and higher atomic number ( Z> 4) materials. 传统的卢瑟福弹性散射模型不适用于描述电子和原子序数较高(Z>4)的材料的弹性相互作用。
This paper roughly shows the calculated best scattering Angle of IED 2000P portable multi elements X ray fluorescence analyzer, by a lot of experiments of analysis pure samples SiO2 and Al2O3 whose effective atomic number is very close to geological samples. 4. 本文通过与地质样品有效原子序数十分接近的SiO2和Al2O3分析纯样品的大量实验,大致计算出IED2000P手提式多元素X射线荧光仪的最佳散射角度为169°。