Search

Your search keyword '"Aizu, Yoshihisa"' showing total 785 results
Start Over Author "Aizu, Yoshihisa"
785 results on '"Aizu, Yoshihisa"'

199. Unidirectional phase-Doppler method for particle-size measurements

Author

Yokoi, Naomichi, Aizu, Yoshihisa, and Mishina, Hiromichi

Subjects
Phase shift (Nuclear physics) -- Measurement, Doppler effect -- Usage, Particles -- Optical properties, Polarization (Light) -- Usage, Optical detectors -- Innovations, Astronomy, Physics
Abstract

We propose what we believe to be a novel unidirectional phase-Doppler method for sizing moving spherical particles on the basis of the phase difference of two polarized Doppler beat signals in a single scattering direction. Light scattered by a moving particle is divided into two rays, which 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 particle refractive index and geometrical parameters of the optical system. To explore the optimum polarization condition, we numerically investigated the phase--diameter properties in relation to polarization angles by using the geometrical optics approximation and generalized Lorenz--Mie theory. We also performed experiments with polystyrene and glass particles to verify the usefulness of the proposed method. [C] 2001 Optical Society of America OCIS codes 120.7250, 260.5430, 280.3340, 290.5850.

Published
2001

Catalog

Books, media, physical & digital resources
See catalog results