NDLI: Time-resolved processes in a pulsed electrical discharge in argon bubbles in water

Content Provider	Springer Nature Link
Author	Gershman, S. Belkind, A.
Copyright Year	2010
Abstract	A phenomenological picture of a pulsed electrical discharge in gas bubbles in water is produced by combining electrical, spectroscopic, and imaging characterization methods. The discharge is generated by applying 1 $\mu $ s pulses of 5 to 20 kV between a needle and a disk electrode submerged in water. An Ar gas bubble surrounds the tip of the needle electrode. Imaging, electrical characteristics, and time-resolved optical emission spectroscopic data suggest a fast streamer propagation mechanism and the formation of a plasma channel in the bubble. Comparing the electrical and imaging data for consecutive pulses applied to the bubble at a frequency of 1 Hz indicates that each discharge proceeds as an entirely new process with no memory of the previous discharge aside from the presence of long-lived chemical species, such as ozone and oxygen. Imaging and electrical data show the presence of two discharge events during each applied voltage pulse, a forward discharge near the beginning of the applied pulse depositing charge on the surface of the bubble and a reverse discharge removing the accumulated charge from the water/gas interface when the applied voltage is turned off. The pd value of ~ 300–500 torr cm, the 1 μs long pulse duration, low repetition rate, and unidirectional character of the applied voltage pulses make the discharge process here unique compared to the traditional corona or dielectric barrier discharges.
Starting Page	661
Ending Page	672
Page Count	12
File Format	PDF
ISSN	14346060
Journal	The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics
Volume Number	60
Issue Number	3
e-ISSN	14346079
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-11-10
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Nonlinear Dynamics Spectroscopy/Spectrometry Quantum Information Technology, Spintronics Quantum Physics Physical Chemistry Atomic, Molecular, Optical and Plasma Physics
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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