Impact of refractive index of aerosol particles on particle diameter optical measurement

Chen-ze ZUO; Qie-ni LÜ; Bao-zhen GE

doi:10.3788/OPE.20172507.1777

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Impact of refractive index of aerosol particles on particle diameter optical measurement

Modern Applied Optics | 更新时间：2020-07-07

- Impact of refractive index of aerosol particles on particle diameter optical measurement
- Optics and Precision Engineering Vol. 25, Issue 7, Pages: 1777-1782(2017)
- 作者机构：
  
  1.天津大学精密仪器与光电子工程学院, 天津 300072
  2.光电信息技术教育部重点实验室, 天津 300072
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20172507.1777
  CLC： O436.2
- Received：02 January 2017，
  
  Accepted：05 February 2017，
  
  Published：25 July 2017
- 稿件说明：
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Chen-ze ZUO, Qie-ni LÜ, Bao-zhen GE. Impact of refractive index of aerosol particles on particle diameter optical measurement[J]. Optics and precision engineering, 2017, 25(7): 1777-1782.
DOI：

Chen-ze ZUO, Qie-ni LÜ, Bao-zhen GE. Impact of refractive index of aerosol particles on particle diameter optical measurement[J]. Optics and precision engineering, 2017, 25(7): 1777-1782. DOI： 10.3788/OPE.20172507.1777.

摘要

针对单颗粒光散射测量方法中被测颗粒折射率会影响测量结果的问题，根据Mie理论和光辐射能通量计算公式，对13种常见气溶胶颗粒，在不同采光中心角θ和采光接收半角β下的散射光辐射能通量

与粒径

关系曲线进行了计算，提出一种基于相对测量误差平均值的评价标准，依据该评价标准定量分析了13种折射率对测量的影响。通过对模拟结果的分析，得出采光结构接收到的光辐射能通量包含前向散射光的条件下，13种颗粒的

曲线较为接近，折射率对测量结果的影响相对较小。

Abstract

Regarding the negative effect of refractive index of particles in single particle light scattering measurement

the relationship curves between the scattering radiant flux

and the particle diameter

were calculated for 13 kinds of common aerosol particles at different light-receiving central angle

and light-receiving half-angle

according to the Mie theory and the light radiant flux calculation formula. Thereby an evaluation standard based on the average of the measured relative errors was presented and employed to evaluate the impact of 13 kinds of refractive index on the measurement quantitatively. Through the analysis of simulation results

it is concluded that if the light radiant flux received by the light-receiving system includes the forward scattered light

the

curves of 13 kinds of particles are close to each other

and the impact of refractive index in the measurement is remarkablely reduced.

关键词

Keywords

references

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