用全固态激光器和一维CCD测定微粒粒径  

Using Portable Laser and CCD to do Small Particle Sizing

作　　者：贾光明[1] 张贵忠[1] 向望华[1] 

机构地区：[1]天津大学精密仪器与光电子工程学院光电信息技术科学教育部重点实验室,天津300072

出　　处：《光子学报》2006年第9期1293-1295,共3页Acta Photonica Sinica

基　　金：天津市科委基金资助(批准号:043601011)

摘　　要：建立了一套利用线阵CCD探测散射光强从而测定粒径的实验装置.该装置采用线阵CCD取代传统的同心环探测器,并采用一台小尺寸全固态绿光激光器取代传统的HeNe激光器.理论上采用全Mie氏散射理论,自行编写了实验数据的计算机拟合程序,可以由实验测得的散射光强角分布反演求出粒径分布信息.对粒径分别为4.91μm和9.88μm的聚苯乙烯小球均取得了良好的粒径测量结果.该装置被证实可用于测定的粒径范围为0.7μm～44.0μm.The experimental scheme for particle sizing by detecting the intensity of scattered light with a linear CCD instead of a concentric ring detector was build. The excitation was a compact all-solid-state green laser instead of the conventional He-Ne laser. A full Mie scattering theory was employed to describe the scattering process, through computer fitting of the measured data of scattered intensity vs scattering angle, diameters of the standard polystyrene spheres of 4.91 μm and 9.88 μm dimensions were successfully retrieved. The present apparatus is proven to be simple and effective for sizing particles of 0.7-44.0 μm in diameter.

关 键 词：Mie氏散射 粒度仪 1D-CCD 固态激光器 

分 类 号：TN2[电子电信—物理电子学]