A FIBER-OPTICS-BASED LIGHT-SCATTERING INSTRUMENT FOR TIME-RESOLVED SIMULTANEOUS STATIC AND DYNAMIC MEASUREMENTS

A fiber-optics-based multiangle light scattering instrument is present ed, which permits time-resolved static and dynamic measurements. The s cattered light is simultaneously collected at nine fixed directions us ing single and few mode fibers. Furthermore, a continuous range of sca ttering angles between 3.6 degrees and 144.1 degrees is obtained by ch anging the direction of the incident beam. The instrument is thus idea lly suited for determinations of form and structure factors, which dem and precise measurements over a large range of scattering angles, as w ell as for studies of aggregation phenomena or structural transitions, which require time-resolved multiangle measurements. (C) 1996 America n Institute of Physics.