Fig. 1. (a) Real and (b) imaginary permittivity in bentonite as a function of frequency. Results are from the network analyzer for different volumetric water contents (1 = 0.088; 2 = 0.190; 3 = 0.292; 4 = 0.326; 5 = 0.413; 6 = 0.521; 7 = 0.594). Losses due to ionic conductivity ^–1–1₀ (c) were computed from resistance measurements with a LRC bridge. Losses due to relaxation (d) were calculated by subtracting ^–1–1₀ from ^''_r. Frequency values on the x axis are on log scale.