Scattering Characteristics of C@H2O Composite Particle Based on Mie Light Scattering Theory

LYU Yi-ying; GAO Shan; XU Qing-jun

doi:10.3788/fgxb20194003.0298

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Scattering Characteristics of C@H₂O Composite Particle Based on Mie Light Scattering Theory

Synthesis and Properties of Materials | 更新时间：2020-08-12

- Scattering Characteristics of C@H₂O Composite Particle Based on Mie Light Scattering Theory
- Chinese Journal of Luminescence Vol. 40, Issue 3, Pages: 298-303(2019)
- 作者机构：
  
  1. 枣庄学院光电工程学院, 山东枣庄 277160
  2. 南京大学电子科学与工程学院, 江苏省光电功能材料重点实验室, 江苏南京 210023
- 作者简介：
- 基金信息：
  
  Supported by National Natural Science Foundation of China(61704149,11347158);Project of Youth Scientific Research Fund of Zaozhuang Uniersity(102061803)
- DOI：10.3788/fgxb20194003.0298
  CLC： O432.1
- Received：21 May 2018，
  
  Revised：26 August 2018，
  
  Published Online：17 September 2018，
  
  Published：05 March 2019
- 稿件说明：
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吕依颖, 高珊, 徐庆君. 基于Mie散射理论的C@H2O复合粒子散射特性研究[J]. 发光学报, 2019,40(3): 298-303

LYU Yi-ying, GAO Shan, XU Qing-jun. Scattering Characteristics of C@H2O Composite Particle Based on Mie Light Scattering Theory[J]. Chinese Journal of Luminescence, 2019,40(3): 298-303
吕依颖, 高珊, 徐庆君. 基于Mie散射理论的C@H2O复合粒子散射特性研究[J]. 发光学报, 2019,40(3): 298-303 DOI： 10.3788/fgxb20194003.0298.

LYU Yi-ying, GAO Shan, XU Qing-jun. Scattering Characteristics of C@H2O Composite Particle Based on Mie Light Scattering Theory[J]. Chinese Journal of Luminescence, 2019,40(3): 298-303 DOI： 10.3788/fgxb20194003.0298.

摘要

大气中大量存在的复合粒子会对激光传输效率产生很大影响。由于空气中水蒸气含量较高，以C作为凝结核外层包裹以水的核壳结构微粒对光传输具有明显的散射效应。本文应用Mie散射理论对C@H

O核壳结构微粒的散射特性进行了理论分析和数值计算，首先给出了不同入射波长、核粒子半径以及水膜厚度条件下散射强度分布变化曲线；其次给出了不同入射波长、核粒子半径以及水膜厚度条件下偏振变化情况；最后讨论了光学截面与粒子半径之间的关系。结果表明各参数对前向散射强度影响较大，入射波长越大散射强度越弱，C核半径增大粒子的前向散射增强，水膜厚度增大粒子的前向散射增强，而后向散射无明显影响；入射波长较大时，粒子在多个角度出现线偏振光，入射波长增大、碳核半径变大、水膜厚度增大，偏振度峰值都会增多；随着入射波长的增大，散射截面最大峰值位置向着半径增大的方向移动，并伴随一定的振荡现象，散射和消光截面在碳核半径为0.1 m左右达到最大值。

Abstract

The theoretical analysis and numerical calculations of C@H

O composite particle's light scattering characteristics were carried out by using Mie scattering theory. The distribution of scattering intensity and polarization with scattering angle under different parameters were both presented. The relationship between optical section and particle's radius was also given. The results showed that the forward scattering intensity was more greatly influenced by each parameters than that by the back-scattering. The larger wavelength is

the weaker the intensity is. The forward scattering increases with the C core radius and water film thickness while the back-scattering is substantially retained. As for the polarization

linear polarized light appears at various angles

the larger incident wavelength is

the bigger carbon nucleus radius is

the thicker water film thickness is

the more polarization peaks. The scattering cross section and extinction cross section posses a peak value when carbon nucleus radius is approximately 0.1 m.

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