Extremely fast formation of anode spots in an atmospheric discharge points to a fundamental ultrafast breakdown mechanism

By employing multi-frame laser interferometry, shadow, and schlieren imaging, we trace the formation of a nanosecond spark discharge in millimeter-sized air gaps formed by a point cathode and flat anode or vice-versa. We discover that the electrical breakdown of the discharge gap is associated with...

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Veröffentlicht in:	Plasma sources science & technology 2019-12, Vol.28 (12), p.125007
Hauptverfasser:	Parkevich, E V, Medvedev, M A, Khirianova, A I, Ivanenkov, G V, Selyukov, A S, Agafonov, A V, Shpakov, K V, Oginov, A V
Format:	Artikel
Sprache:	eng
Schlagworte:	cathode and anode spots highly ionized plasma multi-frame laser probing plasma diagnostic techniques plasma ionization spark discharge ultrafast breakdown
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Zusammenfassung:	By employing multi-frame laser interferometry, shadow, and schlieren imaging, we trace the formation of a nanosecond spark discharge in millimeter-sized air gaps formed by a point cathode and flat anode or vice-versa. We discover that the electrical breakdown of the discharge gap is associated with extremely fast (
ISSN:	0963-0252 1361-6595 1361-6595
DOI:	10.1088/1361-6595/ab518e