Abstract：The problem of determining the particle size range in the visible-infrared region was studied using the independent model algorithm in the total scattering technique. By the analysis and comparison of the accuracy of the inversion results for different R-R distributions, the measurement range of particle size was determined. Meanwhile, the corrected extinction coefficient was used instead of the original extinction coefficient, which could determine the measurement range of particle size with higher accuracy. Simulation experiments illustrate that the particle size distribution can be retrieved very well in the range from 0.05 to 18 μm at relative refractive index m=1.235 in the visible-infrared spectral region, and the measurement range of particle size will vary with the varied wavelength range and relative refractive index. It is feasible to use the constrained least squares inversion method in the independent model to overcome the influence of the measurement error, and the inverse results are all still satisfactory when 1% stochastic noise is added to the value of the light extinction.
Key words：Total light scattering;Measurement range of particle size;Visible-infrared region
孙晓刚,唐红,戴景民. 可见-红外波段光全散射法颗粒粒径测量范围的研究[J]. 光谱学与光谱分析, 2008, 28(12): 2793-2798.
SUN Xiao-gang, TANG Hong, DAI Jing-min. Research on the Measurement Range of Particle Size with Total Light Scattering Method in Vis-IR Region. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2008, 28(12): 2793-2798.
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