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Typically a gas is almost a perfect electrical insulator which allows its widespread use in that capacity. When an electric field of sufficient intensity is applied across a gas, it can become an electrical conductor. The transition from the electrically insulating state to the electrically conducting state is called electric breakdown. This paper is a tutorial attempt to review the fundamental physical...
Hickam(1) has shown that at extremely low pressures (10−4–10−5 mm) the electron capture curve of SF5 is dependent on the temperature at which the experiment is conducted. Experiments were performed to see if there was a temperature effect on the breakdown of SF5. In non-uniform fields, the positive direct voltage for breakdown in SF5 as a function of pressure goes through a maximum. The reason for...
The negative corona extinction voltage or breakdown extinction voltage has been determined in air and SF6 at atmospheric pressure for the sphere to plane configuration. Spheres or points ranging in size from a 0.250″ radius sphere to a 0.0024″ radius phonograph needle were used with gaps of the order of 1–10 millimeters. The negative corona extinction voltage was also determined for the coaxial cylinder...
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