Abstract
Dynamic light scattering experiments were conducted to understand the phenomena of liquid phase separation. The alloy of succinonitrile-ethanol, which is in monotectic composition_, was cooled from mono-phase temperature to two-phase region . The scattering intensity increased drastically near the critical temperature . The self-correlation function of the scattering intensity shows two peaks in the particle size distribution, one is less than 50 nm and the other is from 150 nm to 200 nm. The former is from residual impurities, and the latter is attributed to the concentration fluctuation near the critical temperature. It was concluded that the dynamic light scattering experiments has a high potential in phase separation phenomena studies, particularly in a microgravity environment .
