抄録
Several experiments on the dielectric breakdown of silver halide crystals were made, concerning about the effect of illumination and temperature. The temperature dependency of the breakdown strength of silver halide crystals seems to be similar to that of alkali halide crystals. The photographic silver specks in the crystals, which were made by illumination and then by being kept in the dark, are found to raise the breakdown strength. The effect of illumination are dependent on the interval between illumination and breakdown and on the repetition rate. These effects seem to be explained by photoelectrons, positive holes, ions and their space charge. Electrical conductivity of pulse electric field was also measured, showing that the ionic current is predominant even in such a short pulse field.
