Neutral Atom Density at Current Zero in Interruption of Intense-Mode Vacuum Arc

Ryo Kikuchi,Yuichi Hirano,Haruki Ejiri,Yuki Inada,Akiko Kumada,Kunihiko Hidaka,Akira Daibo,Yoshimitsu Niwa,Yo Sasaki,Junichi Kondo,Naoki Asari

2020 29th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)（2021）

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摘要

Neutral atom density in intense-mode vacuum arc just before current zero as a determinant factor for the current interruption success or failure was measured by Shack-Hartmann laser wavefront sensors. The electrode selected in this study was Cu50Cr50 wt.% and the contact diameter of 6 mm. 50-Hz sinusoidal current of 2 kArms or 4 kArms was applied to the electrode gap and curr...

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关键词

Vacuum,arc discharge,plasma parameter,neutral atom density,current interruption

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