The research of Fraunhofer diffraction from the ellipsoid model

WU Da-jian; WANG Ya-wei

According to the theory of Fraunhofer diffraction,the MATLAB software is applied to proceed the emulation and the standard ellipsoid model of the different body factors is dissussed.Calculation results are compared with the experiment results.So that the ellipsoid model is comfirmed superior to the ball model in the particle measure,the particle size distribution of nonspherical particles can be obtained more accurately.Finally,the body factors of the particles are achined from the inversion to the diffraction pattern of ellipsoid model.

Corresponding author: WANG Ya-wei, lzwjyw@public.zj.js.cn

1. Faculty of Science, Jiangsu University, Zhengjiang 212013, China

Received Date: 2004-08-11

Accepted Date: 2005-02-28

Available Online: 2005-09-25

Abstract: According to the theory of Fraunhofer diffraction,the MATLAB software is applied to proceed the emulation and the standard ellipsoid model of the different body factors is dissussed.Calculation results are compared with the experiment results.So that the ellipsoid model is comfirmed superior to the ball model in the particle measure,the particle size distribution of nonspherical particles can be obtained more accurately.Finally,the body factors of the particles are achined from the inversion to the diffraction pattern of ellipsoid model.

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Reference (15)

[1]	刘子超,赵云惠.液雾及颗粒的激光测量原理[M].北京:宇航出版社,1988.161～165.
[2]	LOCK J A,TODGES J T.Far～field scattering of axis-symmertric laser beam of arbitrary profile by an on-axis spherical particles[J].Appl Opt,1996,35(21):4283～4290.
[3]	GOUESBET G.Scattering of higher-order Gaussian beams of an infinite cylinder[J].J Opt,1997,28(1):45～65.
[4]	JIMBO G,TSUBAKI J,YAMAOTO H.The comparision of measuring result of Particle sizers[J].Powder Technol,1991,74(2):130～134.
[5]	ADLER C L,LOCK J A,STONE B R.Rainbow scattering by a cylinder with a nearly elliptical crossection[J].Appl Opt,1998,37(9):1540～1550.
[6]	HOLLOMD A C,GAGNE G.The scattering of polarized light bypolydisperse systems of irregular particles[J].Appl Opt,1970,9(5):1113～1121.
[7]	VIDEEN G,PINNICK R G,NGO D et al.Asymmetry parameter and aggregate particle[J].Appl Opt,1998,37(6):1104～1109.
[8]	HIRST E,DAYE P H,GUPPY J R.Light scattering from nonspherical airbone partides experimental and theoretical comparisons[J].Appl Opt,1994,33(30):7180～7186.
[9]	任中京,王少清.用于激光颗粒测试技术的非球形颗粒的椭圆衍射模型[J].中国激光,1997,24(2):127～132.
[10]	BATON J P.Electromagnetic field calculations for a sphere illuminated by a higher-order Gaussian beam ⅡFar-field scattering[J].Appl Opt,1998,37(15):3339～3344.
[11]	TSANG L,DING K H,SHIN S E et al.Scattering of electromagnetic waves from dense distributions of spheridal particles based on Monte Carlo simmlations[J].J O S A,1998,A15(10):2660～2269.
[12]	BORN M,WOLF E.Principles of optics[M].New York:Pergamon Press,1975.381～450.
[13]	王亚伟,贺安之,刘晓然.任意形体微粒分布的概率表述及测量方法[J].光学学报,2002,22(3):363～367.
[14]	程路.光学——原理及发展[M].北京:科学出版社,1990.143～145.
[15]	王亚伟,韩广才.微粒形体分布函数的光学图像确定方法[J].光电子·激光,2003,14(9):999～1001.

The research of Fraunhofer diffraction from the ellipsoid model

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