Scattering characteristics of aerosol aggregation particles of 1.06 μm laser

Huang Chaojun; Wu Zhensen; Liu Yafeng

The aerosol is an important ingredient of atmospheric electromagnetic environment, the aerosol particles affect on the transmission of 1.06 m laser seriously. The single scattering albedo and asymmetry factor is an important parameter for the research on the laser transmission characteristics in aerosol. Cluster-cluster aggregation(CCA) model was used to simulate four kinds of aerosol aggregation particles consisting of 64 spherical original particles. Combined with the discrete dipole approximation method, the value of single scattering albedo and asymmetry parameter under different incident angles with 1.06 m laser incident were numerically calculated, and the influence of the size parameters of the single scattering albedo and asymmetry factor was analyzed. The results show that the single scattering albedo and asymmetry factor are significantly dependent on the incident angle and shapes for the aerosol aggregation particles with same number of original particles. And for the aerosol aggregation particles with different size parameters, the single scattering albedo and asymmetry factor increases with increasing size parameter, when the size parameter is greater than 3, the scattering of aerosol aggregation particles is mainly concentrated in the forward scattering.

1. School of Science,Xidian University,Xi'an 710071,China;

2. School of Physics and Telecommunication Engineering,Shaanxi University of Technology,Hanzhong 723000,China

Received Date: 2013-01-05

Rev Recd Date: 2013-02-09

Publish Date: 2013-09-25

Key words:

Abstract: The aerosol is an important ingredient of atmospheric electromagnetic environment, the aerosol particles affect on the transmission of 1.06 m laser seriously. The single scattering albedo and asymmetry factor is an important parameter for the research on the laser transmission characteristics in aerosol. Cluster-cluster aggregation(CCA) model was used to simulate four kinds of aerosol aggregation particles consisting of 64 spherical original particles. Combined with the discrete dipole approximation method, the value of single scattering albedo and asymmetry parameter under different incident angles with 1.06 m laser incident were numerically calculated, and the influence of the size parameters of the single scattering albedo and asymmetry factor was analyzed. The results show that the single scattering albedo and asymmetry factor are significantly dependent on the incident angle and shapes for the aerosol aggregation particles with same number of original particles. And for the aerosol aggregation particles with different size parameters, the single scattering albedo and asymmetry factor increases with increasing size parameter, when the size parameter is greater than 3, the scattering of aerosol aggregation particles is mainly concentrated in the forward scattering.

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Reference (19)

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Scattering characteristics of aerosol aggregation particles of 1.06 μm laser

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