A correlator for light scattering experiments

Light scattering is frequently used to examine the random motion of physica l system particles, By evaluating the autocorrelation function of the acqui red signal, structural informations of macromolecular solutions can be obta ined. We here present an instrument that is able to calculate the correlation fun ction in real time. The instrument features high-precision capabilities and a wide range of selectable delays, A digital signal processor (DSP) is cha rged with the calculations, whereas a Pe permits the user the management of the global instrument and the visualization and the storing of the evaluat ed correlation.