本文利用氦氖激光器为光源在自行设计的光散射实验装置上对球形微粒群进行了粒径平均直径及直径分布的理论研究和测量.实验结果表明,本实验装置具有测量精度高、适用范围广和测量粒径范围宽等特点. In this paper, the He-Ne laser as a light source in the self-designed light scattering experimental device spherical particle size distribution of the average diameter and diameter of the theoretical study and measurement results show that the experimental device has high measurement accuracy, wide range of applications And the measurement of a wide range of particle size and other characteristics.