悬浮液背向散射光强度的蒙特卡罗计算：与实验数据的比较

Monte Carlo calculation of backscattered light intensity by suspension: comparison with experimental data.

作者信息

Bergougnoux L, Misguich-Ripault J, Firpo J L, André J

出版信息

Appl Opt. 1996 Apr 1;35(10):1735-41. doi: 10.1364/AO.35.001735.

DOI:10.1364/AO.35.001735

Abstract

An optical device for measuring high particle concentrations is presented. The sensor consists of two optical fibers used for the emission and reception of the light scattered by particles in suspension. To describe the light path in this medium, we developed a Monte Carlo calculation including a mean free path, a phase function for particle scattering, and an absorption rate. A similarity law links concentration variations to a homothetic space transformation. A comparison between our calculation and experimental data is given for well-stirred, dense suspensions of silica particles with different sizes. A good fit is found when the model parameters (mean free path and phase function) are chosen according to the data given by a particle sizer.

摘要

本文介绍了一种用于测量高颗粒浓度的光学装置。该传感器由两根光纤组成，用于发射和接收悬浮颗粒散射的光。为了描述光在这种介质中的传播路径，我们开发了一种蒙特卡罗计算方法，其中包括平均自由程、颗粒散射的相位函数和吸收率。相似定律将浓度变化与相似空间变换联系起来。对于不同尺寸的二氧化硅颗粒充分搅拌的浓悬浮液，给出了我们的计算结果与实验数据的比较。当根据粒度分析仪给出的数据选择模型参数（平均自由程和相位函数）时，发现拟合效果良好。