Abstract
The efficiency of secondary electron emission induced by ions and atoms remaining from previous discharge during the initiation of electrical breakdown in a nitrogen-filled tube with bulk copper and gold plated electrodes has been investigated. This investigation was done by measuring the electrical breakdown time delay as a function of afterglow period τ, glow current i g and electrode gap d. The results show that the gold plated cathode is more efficient in secondary electron emission caused by nitrogen atom impact on its surface than that of bulk copper. This phenomenon can be explained by different adsorption ability of nitrogen atoms on the copper and gold surface.
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