Plasma generation by a pulsed nanosecond discharge on a surface of porous dielectric saturated with liquid

This work presents the results of the experimental study of a method of liquid propellant supply by the means of a porous ceramic diffusion element placed in a coaxial discharge unit. Diffusion pump oil is used as a propellant. Supply rate of liquid to the discharge area is controlled by the pressur...

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Bibliographic Details
Main Authors: Morozov, P. A., Emlin, R. V., Punanov, I. F.
Format: Conference Proceeding
Language:English
Online Access:Request full text
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Summary:This work presents the results of the experimental study of a method of liquid propellant supply by the means of a porous ceramic diffusion element placed in a coaxial discharge unit. Diffusion pump oil is used as a propellant. Supply rate of liquid to the discharge area is controlled by the pressure at the back side of the porous element. Plasma flow is generated by discharge initiated by 30 ns pulses of 3.5 kA current at initial voltage of 90 kV. Measured parameters are weight loss and ion current of the plasma bunch. We show that the discharge in such experimental conditions is localized within a layer of liquid on a surface of porous ceramics. Plasma formation efficiency depends on thickness of the liquid layer, being higher in case of thinner layers.
ISSN:2158-4923
DOI:10.1109/PPC.2017.8291280