An Analysis of the Instability Phenomena of a Low current Vacuum Arc for Silver Cathode

カテゴリ: 全国大会

論文No: 1-227

グループ名: 【全国大会】平成12年電気学会全国大会論文集

発行日: 2000/03/21

タイトル(英語): An Analysis of the Instability Phenomena of a Low current Vacuum Arc for Silver Cathode

著者名: ムンクンナロン (日本工業大学),新井 一由(日本工業大学),丹羽 芳光(東芝),鈴木 節雄(東芝),森宮 修(日本工業大学)

著者名(英語): Narong,Mungkung|Kazuyoshi,Arai|yoshimitsu,Niwa|setsuo,suzuki|osami,Morimiya

要約(日本語): The main purpose of this study was set to analyze instability phenomena of low current vacuum arc, characterized by noise on the current trace prior to the current chopping. The analyzed instability was derived from cathode spot model. It is proposed that a current level below that no real solution exists is unstable current and this current corresponds to the point at which a vacuum arc turns into unstable. It was found that instability current 　for silver cathode is lower than 16.2 A, the electrons returning to the sheath from the plasma one dominate over positive ions. Consequently, the second power of cathode electric field is equal or less than 0.

原稿種別: 日本語

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