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This paper is an extension of the work presented to the 1964 conference.1 In that paper the thermal dielectric strength of several glasses at various temperatures was measured and calculated for specimens 2 mm thick. This paper extends the techniques developed in the earlier paper to variation in sample thickness.
D. C. voltage fields up to 2.5 million volts per inch were applied to glass samples. It was discovered that the resultant discharge current was modulated by an extremely large number of small individual discharges. These small discharges were monitored on an oscilloscope, and their quantity was recorded by an electronic counter.
This paper attempts to summarize the basic molecular mechanisms which control the dielectric properties of glasses and glass-ceramic materials. An analysis of these polarizations reveals that alkali ions are the principal constituents which determine the dielectric loss properties. In glassy materials containing alkali ions in rather large quantities, these ions control the losses over most of the...
A study of the effects of gamma radiation on the electrical conductivity of glasses is of interest because of the practical uses of these insulators, and because the mechanism of induced conductivity is not expected to be affected by chemical degradation caused by the irradiation as in the case of organic insulation.
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