Abstract
A laser light scattering equipment with a large-capacity photon counting memory was developed. The equipment was designed for high speed data acquisition for experiments conducted in shorttime microgravity facilities, such as the Kamisunagawa and Toki dropshafts. The photon counter had 1 M channels, which could provide 10 second data accumulation with a sampling time of 10 µs. Short-time correlogram was obtained for latex particles in a water and the time resolution of particle size analysis was investigated. It was found that a duration of 10 seconds was not short for observing the processes with this system when the sufficient scattering intensity was given.
