Low coherence dynamic light scattering measurement method using a light source and a dynamic light scattering measurement device

摘要

PROBLEM TO BE SOLVED: To provide a dynamic light scattering measuring method employing a low coherence light source with which an average particle size of fine particles or the distribution thereof can be measured with high accuracy and through simple operation even in the case of a dispersion solution containing fine particles in high concentration, and a dynamic light scattering measuring device.;SOLUTION: A dynamic light scattering measuring method is provided for measuring dynamic characteristics of fine particles S₂ dispersed in a dispersion solution S while using a Mach-Zehnder interferometer using low coherence light. According to the dynamic light scattering measuring method, in the dispersion solution S, the fine particles S₂ are irradiated with low coherence light, light scattered by the fine particles S₂ in the dispersion solution S is received for each of a plurality of different scattering angles θ as scattered light, and a translation/diffusion mode is selected and determined from a temporal correlation function of scattered light at each scattering angle θ.;COPYRIGHT: (C)2014,JPO&INPIT