| 光谱学与光谱分析 |
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| Research on Properties of Light Scattering for Non-Spherical Suspended Particles in Water Based on T Matrix Model |
| Vo Quang Sang1,2, FENG Peng1*, MI De-ling1, TANG Bin1,3, WEI Biao1 |
1. Key Lab of Optoelectronic Technology and Systems of Ministry of Education, Chongqing University, Chongqing 400044, China
2. Faculty of Optics Engineering, Le Quy Don Technical University, Hanoi, Vietnam
3. School of Optoelectronic Information, Chongqing University of Technology, Chongqing 400054, China |
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Abstract Scattering light properties of suspended particles in water is an important parameter which influences the accuracy of water quality measurement. In this paper, based on T matrix model, the authors study the UV-Visible light irradiation intensity of 3 kinds of non-spherical suspended particles including ellipsoid, cylinder and generalized Chebyshev in water. The relationship between light scattering intensity and incident light wavelength, shape parameters of suspended particles, complex refractive index and rotation angle has been presented in detail. Simulation results show that when changing the particle size, adjusting the wavelength of incident light, all light scattering intensity of 3 kinds of non-spherical suspended particles show significant changes. In the wavelength range from 200～800 nm, the impact of geometric on the particles size decreases with increasing wavelength and the sattering properites mainly depends on complex refractive index. The scattering intensity becomes stronger and exhibits strong oscillations for ultraviolet and infrared light when the diameter of particles are less than 0.2 μm or approaching 1 μm. However, the scattering intensity is relatively stable and close to zero, shows small disturbances with the change of wavelength of incident light when the particles sizes are within 0.3 to 0.9 μm
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Received: 2014-08-05
Accepted: 2014-12-20
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Corresponding Authors:
FENG Peng
E-mail: coe-fp@cqu.edu.cn
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