真空中インパルス電圧印加時における電極間微小電流発生メカニズムの検討

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タイトル別名
  • Mechanism of Small Current Generation under Impulse Voltage Applications in Vacuum
  • シンクウ チュウ インパルス デンアツ インカジ ニ オケル デンキョク カン ビショウ デンリュウ ハッセイ メカニズム ノ ケントウ

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説明

Small discharge not to accompany breakdown can occur under high electric field in vacuum, however the mechanism is not well clarified. We have found that the current of small discharge decreases with repeated voltage applications, and leads to electrode conditioning effect of raising withstand voltage. The inception of the current is delayed with the decrease of current, and the inception time and waveform change by gap length. On the other hand, under low vacuum condition, the current increases and reaches saturation with repeated voltage applications. From these discussions, we concluded that the generating process of small current depended on the adsorption and absorption gas of electrodes.

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