| Abstract: | We report results of static light scattering for partially charged gels at different swelling degrees and different ionization degrees. We measured both the ensemble-average and the rms fluctuations of the scattered intensity by scanning through various positions in the gel. It is shown that the dynamic concentration fluctuations are, to the first order, the same as in semi-dilute solutions at the same concentration. The excess of scattering of the gel with respect to the solutions arises mainly from frozen-in scattering domains with spatial extent less than ～ 300 Å. |
