DIELECTRIC LOW-FREQUENCY DISPERSION AND CROSSOVER PHENOMENA OF HCL-DOPED ICE

Experimental results for the dielectric measurement of HCl-doped ice a re presented. A dielectric low-frequency dispersion was observed at a lower frequency side than the intrinsic Debye dispersion and is discus sed on the basis of the temperature dependence of the relaxation time and the dielectric strength. In HCl-doped ice showing crossover phenom ena between ac and dc conductivities on temperature dependence, the re laxation time of the low-frequency dispersion is constant above the cr ossover temperature. It increases with decreasing temperature below th e crossover temperature, but HCl-doped ice does not clearly show cross over between relaxation times of the Debye and the low-frequency dispe rsions on temperature dependence.