Abstract
Coherent small angle X-ray scattering methods have been used to investigate the structure and dynamics of charged colloidal systems with different volume concentration. The static structure factor indicates that the degree of ordering depends on both the electrostatic interactions and the volume fraction. All systems showed a compressed exponential form of the dynamic structure factor. The Q-dependence of the relaxation time τ hints towards ballistic motion of the colloidal particles in the glassy state. For the sample with the highest volume fraction we observe an influence of the static structure factor on the relaxation rate of the particles indicating a caging effect also for the ballistic type of motion.
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