Meng Rui, Ge Baozhen, Lü Qieni, Xu Jie. Accurate Determination of Scattering Angle and Magnification Based on Scattering Spectral Particle Refractive Index Measurement System[J]. Chinese Journal of Lasers, 2018, 45(10): 1004003
- Chinese Journal of Lasers
- Vol. 45, Issue 10, 1004003 (2018)
Fig. 1. GOA model of particle scattering
Fig. 2. System diagram of particle scattering spectrum
Fig. 3. The zero-order and the first-order spectral intensities vs scattering angle for particles with different refractive indices and diameters. (a) 2a=20 μm; (b) 2a=45 μm
Fig. 4. Dimensionless distance of the zero-order and the first-order spectra vs scattering angle for particlewith different refractive indices
Fig. 5. Refractive index error caused by scattering angle deviation of particles with different refractive indices. (a) n=1.195; (b) n=1.330; (c) n=1.429
Fig. 6. Refractive index error caused by magnification deviation of particle with different refractive indices. (a) n=1.195; (b) n=1.330; (c) n=1.429
Fig. 7. Diagram of particle refractive index measurement system
Fig. 8. Experimental results of the zero-order and the first-order spectra of standard PSL particle. (a) 2a=15 μm; (b) 2a=21.3 μm; (c) 2a=25 μm; (d) 2a=30 μm
Fig. 9. Experimental results of the zero-order and the first-order spectra of WD particle. (a) 2a=17.3 μm; (b) 2a=19.7 μm; (c) 2a=22.5 μm; (d) 2a=27.6 μm
Fig. 10. Fitting lines of the spectrum distance D01 and the diameter of PSL and WD particles
Fig. 11. Experimental results of the zero-order and the first-order spectra of two samples. (a) PSL particle with diameter of 45 μm; (b) glass particle with diameter of 19.1 μm
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Table 1. Intensity rate of the zero-order to the first-order spectra at different scattering angles
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Table 2. Numerical relationship between dimensionless distance L01 and scattering angle for particlewith different refractive indices
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Table 3. Droplet diameters at four pulses parameters
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Table 4. Experimental D01of standard PSL particle with different diameters
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Table 5. Experimental D01 of WD particle with different diameters
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Table 6. Refractive index experimental result of different standard particles
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