中国物理B ›› 2009, Vol. 18 ›› Issue (3): 1040-1044.doi: 10.1088/1674-1056/18/3/033

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Light scattering by a spherical particle with multiple densely packed inclusions

孙贤明, 王海华, 刘万强, 申晋   

  1. School of Electrical and Electronic Engineering, Shandong University of Technology, Zibo 255049, China
  • 收稿日期:2008-06-11 修回日期:2008-09-16 出版日期:2009-03-20 发布日期:2009-03-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 60877050).

Light scattering by a spherical particle with multiple densely packed inclusions

Sun Xian-Ming(孙贤明), Wang Hai-Hua(王海华), Liu Wan-Qiang(刘万强), and Shen Jin(申晋)   

  1. School of Electrical and Electronic Engineering, Shandong University of Technology, Zibo 255049, China
  • Received:2008-06-11 Revised:2008-09-16 Online:2009-03-20 Published:2009-03-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 60877050).

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摘要： This paper calculates light scattering by a spherical water particle containing densely packed inclusions at a visible wavelength 0.55 \mum by a combination of ray-tracing and Monte Carlo techniques. While the individual reflection and refraction events at the outer boundary of a sphere particle are considered by a ray-tracing program, the Monte Carlo routine simulates internal scattering processes. The main advantage of this method is that the shape of the particle can be arbitrary, and multiple scattering can be considered in the internal scattering processes. A dense-medium light-scattering theory based on the introduction of the static structure factor is used to calculate the phase function and asymmetry parameters for densely packed inclusions. Numerical results of the single scattering characteristics for a sphere containing multiple densely packed inclusions are given.

关键词: ray-tracing technique, Monte Carlo method, light scattering, inclusions

Abstract: This paper calculates light scattering by a spherical water particle containing densely packed inclusions at a visible wavelength 0.55 $\mu$m by a combination of ray-tracing and Monte Carlo techniques. While the individual reflection and refraction events at the outer boundary of a sphere particle are considered by a ray-tracing program, the Monte Carlo routine simulates internal scattering processes. The main advantage of this method is that the shape of the particle can be arbitrary, and multiple scattering can be considered in the internal scattering processes. A dense-medium light-scattering theory based on the introduction of the static structure factor is used to calculate the phase function and asymmetry parameters for densely packed inclusions. Numerical results of the single scattering characteristics for a sphere containing multiple densely packed inclusions are given.

Key words: ray-tracing technique, Monte Carlo method, light scattering, inclusions

中图分类号:  (Diffraction and scattering)

  • 42.25.Fx
42.15.Dp (Wave fronts and ray tracing) 42.25.Gy (Edge and boundary effects; reflection and refraction) 42.25.Bs (Wave propagation, transmission and absorption)