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Long Plasma Jet Generated by DC Discharge in N2 at Atmospheric Pressure: Impact of Trace Admixtures on Composition of Reactive Species in Far Afterglow

The object under study is a long plasma jet (up to 15 cm) generated by a steady-state dc discharge in N 2 at atmospheric pressure. Successful usage of long afterglow plasma jet for distant treatment of 3-D object of a complicated shape with deep slots was demonstrated. This paper focuses on a role o...

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Published in:IEEE transactions on plasma science 2015-01, Vol.43 (3), p.745-752
Main Authors: Akishev, Yuri, Balakirev, Anton, Grushin, Michail, Karalnik, Vladimir, Kochetov, Igor, Napartovich, Anatoly, Petryakov, Alexander, Trushkin, Nikolay
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cited_by cdi_FETCH-LOGICAL-c458t-2d850b082717b8b56f01ac9d28130d73977ec9f8bcd6b530ee3bc5f5a9dbf8723
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container_title IEEE transactions on plasma science
container_volume 43
creator Akishev, Yuri
Balakirev, Anton
Grushin, Michail
Karalnik, Vladimir
Kochetov, Igor
Napartovich, Anatoly
Petryakov, Alexander
Trushkin, Nikolay
description The object under study is a long plasma jet (up to 15 cm) generated by a steady-state dc discharge in N 2 at atmospheric pressure. Successful usage of long afterglow plasma jet for distant treatment of 3-D object of a complicated shape with deep slots was demonstrated. This paper focuses on a role of trace impurities in plasma-forming gas on chemical composition of reactive species in far afterglow plasma. This role was studied numerically by example of the additives in high-purity nitrogen contained in high-pressure N 2 tank. It is shown that small oxygen admixtures (at 10 ppm level) to N 2 can be more effective in production of atomic oxygen than ambient air. Besides, trace admixtures of water vapor and hydrocarbons (at parts per million level) lead to full change in a composition of reactive species in far afterglow in comparison with the set of primary species generated by plasma source.
doi_str_mv 10.1109/TPS.2014.2383618
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source IEEE Xplore (Online service)
subjects Atmospheric pressure plasma jet (APPJ)
Discharges (electric)
distant plasma treatment
far afterglow
Fault location
Nitrogen
Plasma sources
reactive plasma species
Surface treatment
trace admixtures
title Long Plasma Jet Generated by DC Discharge in N2 at Atmospheric Pressure: Impact of Trace Admixtures on Composition of Reactive Species in Far Afterglow
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