Study on the extinction coefficient of spherical aerosol particles

Jian Yang; He Chen; Yin-chao Zhang; Si-ying Chen; Pan Guo; Li-na Liu

doi:10.1117/12.2034942

19 September 2013 Study on the extinction coefficient of spherical aerosol particles

Jian Yang, He Chen, Yin-chao Zhang, Si-ying Chen, Pan Guo, Li-na Liu

Proceedings Volume 8905, International Symposium on Photoelectronic Detection and Imaging 2013: Laser Sensing and Imaging and Applications; 89052E (2013) https://doi.org/10.1117/12.2034942
Event: ISPDI 2013 - Fifth International Symposium on Photoelectronic Detection and Imaging, 2013, Beijing, China

Abstract

Based on Mie scattering theory, this paper introduces the basic principle of aerosol light scattering and the basic calculation method of the polarization characteristics of scattering light. The spherical aerosol model is widely applied for the convenient and simple theoretic calculation, using the scattering theory by introducing the scattering amplitude matrix to combine incident radiation with scattering light. In scattering theory, aerosol extinction parameter has very important role for improving the precision of the laser radar, remote sensing detection and so on. We have mainly discussed the relationship between the spherical particle radius and extinction coefficient, and relationship between refractive index of the particles and extinction coefficient, respectively. It is concluded that extinction coefficient as a function of particles’ radius gradually oscillate approaching to 2 with the increasing of particle radius, and extinction coefficient curves as a function of refraction index have completely symmetric. The first major maximum of extinction coefficient also has obvious changes with different particles radius or refractive index.

Citation Download Citation

Jian Yang, He Chen, Yin-chao Zhang, Si-ying Chen, Pan Guo, and Li-na Liu "Study on the extinction coefficient of spherical aerosol particles", Proc. SPIE 8905, International Symposium on Photoelectronic Detection and Imaging 2013: Laser Sensing and Imaging and Applications, 89052E (19 September 2013); https://doi.org/10.1117/12.2034942

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KEYWORDS

Refractive index

Atmospheric particles

Aerosols

Scattering

Mie scattering

Spherical lenses

Particles

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