Breakdown Characteristics of Porous Metals
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概要
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We have investigated the breakdown characteristics of porous metals as discharge electrodes, for applications to multichannel arc gaps. We examined a single-needle/plane gap as a nonuniform electric field gap and a sphere/plane gap as a uniform one using a mirror-finished brass plate and a porous metal as plane electrodes. First, we examined the breakdown characteristics of the single-needle/plane gap. The characteristics we investigated are the DC flashover voltage of the gap, and the formative and statistical time lags of flashover when a flat-top nanosecond pulse was applied to the gap. We predicted that the formative and statistical time lags decrease when porous metals are used as a discharge electrode instead of a mirror-finished electrode. However, contrary to our prediction, a significant difference was not observed in the needle/plane experiments. Then we examined a sphere/plane gap. In this case, a significant difference was observed. Therefore, we confirm that the porous metal is a suitable electrode material for the rail gap.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2004-04-15
著者
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IRISAWA Juichi
Department of Electrical Engineering Technological University of Nagaoka
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Takano Saburo
Department Of Agricultural Chemistry Faculty Of Agriculture Tokyo University Of Agriculture
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Furuya Seizo
Department Of Electrical And Electronic Engineering Faculty Of Engineering Tokyo Institute Of Techno
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Irisawa Juichi
Department of Electrical Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan
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Takano Saburo
Department of Electrical Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan
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Furuya Seizo
Department of Electrical Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan
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