Spectroscopy and Spectral Analysis, Volume. 42, Issue 9, 2689(2022)
Study on Spectral Detection System of Emulsified Oil Based on the Degree of Dispersion Polarization
Based on the spectrum detection technology of dispersion polarization, the optical polarization characteristics of emulsified oil particles and the Mie scattering physical model have been emphatically studied, and the spectrum detection system of dispersion polarization degree has been constructed. In the wavelength range of 400-700nm, the spectral reflectance of 301 bands was collected for four samples. Combining the Bessel function and Hankel function, the relationship between the wavelength of incident light and the polarization amplitude vector of the scattered light has been derived, and a new characteristic parameter has been extracted: the degree of dispersion polarization (DODP). Under darkroom conditions, the emulsified oil samples ND18 and ND75 were measured, and the polarization value of the sample at each measurement wavelength was calculated using the dispersion polarization formula, verifying the feasibility of detecting emulsified oil based on DODP value. This study found that although the solution of Mie scattering is derived from the diffraction of a single sphere. As long as their diameter and composition are the same, and the distance between each other is greater than the wavelength, They can also be used to diffract any number of balls. There is no coherent phase relationship between lightly scattered by different spheres, and the total scattered energy is equal to the energy scattered by a sphere multiplied by their integers. When the angle between the observation plane and the vibration direction of the incident wave electric vector is ϕ=0 or ϕ=π/2, the scattered light component
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Xiao WANG, Mu-hua LIU, Jiang XU. Study on Spectral Detection System of Emulsified Oil Based on the Degree of Dispersion Polarization[J]. Spectroscopy and Spectral Analysis, 2022, 42(9): 2689
Category: Research Articles
Received: Jun. 4, 2020
Accepted: Dec. 23, 2021
Published Online: Nov. 17, 2022
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