Abstract
Characteristics of short-lived vacuum arcs were measured in evacuated reed switch contacts. The pressure in the contacts was 10 −5 mbar. Arcing was obtained by separating the electrodes under an electrical load. The arc voltage was found to be 10.3 V. The arc duration as a function of contact current was also studied. It was found out that the arc duration increases linearly with increasing current in the range between 0.2 and 0.8 A. At lower currents the arcing became less common and therefore no attempt was made to measure the phenomenon near the origin.
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