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Plasma erosion opening switch using laser-produced plasma

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4 Author(s)
Fukuzawa, T. ; Dept. of Electr. Eng., Kumamoto Univ., Japan ; Ihara, S. ; Maeda, Sadao ; Akiyama, H.

In order to construct a practical inductive energy storage pulsed power generator, an opening switch which can repeatedly conduct a large current and then rapidly interrupt this current is necessary. Though the plasma erosion opening switch (PEOS) can interrupt a large current rapidly, the effective number of switch operations is limited because of the decrease of the carbon sprayed on the insulator with each shot. A PEOS using a laser-produced plasma, which can possibly be operated for hundreds of thousands of shots without maintenance, is proposed, and its operation as an opening switch is confirmed experimentally

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Plasma Science, IEEE Transactions on  (Volume:20 ,  Issue: 4 )