Title :
Novel phase Doppler method for particle size measurements using a single directional polarized detection
Author :
Yokoi, Naomichi ; Aizu, Yoshihisa ; Mishina, Hiromichi
Author_Institution :
Dept. of Mech. Syst. Eng., Muroran Inst. of Technol., Hokkaido, Japan
Abstract :
A novel phase Doppler method is proposed for sizing of moving spherical particles on the basis of the phase difference of two polarized beat signals in a single scattering direction. Light scattered by a moving particle is divided into two rays that are detected with different polarization angles to transmit dominantly reflected or refracted rays. The phase difference between two signals is linearly proportional to the particle diameter with a given refractive index. Numerical computations and experiments were performed to verify the usefulness of the proposed method
Keywords :
laser Doppler anemometry; light scattering; particle size measurement; polarimetry; refractive index; generalized Lorenz-Mie theory; moving spherical particles; particle size measurement; particle sizing; phase Doppler anemometry; phase Doppler method; phase difference; polarized beat signals; reflected rays; refracted rays; refractive index; single directional polarized detection; single scattering direction; Light scattering; Optical refraction; Optical scattering; Optical variables control; Particle measurements; Particle scattering; Phase measurement; Polarization; Size measurement; Volume measurement;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1999. IMTC/99. Proceedings of the 16th IEEE
Conference_Location :
Venice
Print_ISBN :
0-7803-5276-9
DOI :
10.1109/IMTC.1999.776026
