航天器尾喷焰等离子体Al2O3粒子的光散射特性

核聚变与等离子体物理 ›› 2014, Vol. 34 ›› Issue (1): 90-96.

• 等离子体应用 • 上一篇

航天器尾喷焰等离子体Al2O3粒子的光散射特性

马保科，郭立新，常红芳

(1. 西安工程大学理学院，西安710048；2. 西安电子科技大学理学院，西安710071)

出版日期:2014-03-15 发布日期:2014-03-14
作者简介:马保科(1972-)，男，陕西人，副教授，博士研究生，主要从事复杂媒质中的电磁波传播与散射特性工作。
基金资助:
陕西省自然科学基金项目(2013JM8011)

Light scattering characteristics of Al2O3 tail plume plasmas for a spacecraft

MA Bao-ke , GUO Li-xin , CHANG Hong-fang

(1.School of Science, Xi’an Polytechnic University, Xi’an 710048; 2. School of Science, Xidian University, Xi’an 710071)

Online:2014-03-15 Published:2014-03-14

摘要/Abstract

摘要：

基于Mie散射理论和方法，研究了航天器尾喷焰等离子体中Al₂O₃粒子的光学散射特性，分析了复折射率对单个Al₂O₃粒子消光效率因子、散射效率因子、吸收效率因子、散射相函数以及单次反照率的影响。同时，基于多分散系粒子尺度单峰分布，分析了Al₂O₃粒子按粒径分布后散射场的有关效应因子及散射相函数的变化，并进行了相应的数值模拟。理论和数值模拟研究表明，航天器尾喷焰等离子体Al₂O₃粒子复折射率的虚部和实部、粒径的大小与分布对其散射相函数、消光和散射效率因子以及单次反照率均有明显的影响。

关键词: Mie散射理论, 航天器喷焰等离子体, 粒子散射, 复折射率

Abstract:

Based on the Mie’s scattering theory, the light scattering characteristic of Al₂O₃tail plume plasma for a spacecraft was studied. Influences of the complex refractive index onthe extinction efficiency factor, scattering efficiency factor, absorb efficiency factor, scattering phase function and the single-scattering albedo of an Al₂O₃ particle were analyzed by using the Mie’s scattering theory. Meanwhile, based on the particle scale unimodal distribution with a polydispersity, the changes of the concerned effect factors and the scattering phase function were analyzed with considering the Al₂O₃particle size, and some numerical simulations were also given. The theoretical and numerical simulation studies show that the imaginary and real part of the refractive index of the Al₂O₃ particles, the radius and its distribution of the particles bring out great effect on the scattering phase function, extinction and scattering efficiency factors and single-scattering albedo.

Key words: Mie’s scattering theory, Tail plume plasma of spacecraft, Particle scattering, Complex refractive index

中图分类号:

O533，O436.2

马保科，郭立新，常红芳. 航天器尾喷焰等离子体Al2O3粒子的光散射特性[J]. 核聚变与等离子体物理, 2014, 34(1): 90-96.

MA Bao-ke , GUO Li-xin , CHANG Hong-fang. Light scattering characteristics of Al2O3 tail plume plasmas for a spacecraft[J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2014, 34(1): 90-96.

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航天器尾喷焰等离子体Al2O3粒子的光散射特性

Light scattering characteristics of Al2O3 tail plume plasmas for a spacecraft

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