Langmuir probe diagnostics of an atmospheric pressure, vortex–stabilized nitrogen plasma jet

Langmuir probe measurements in an atmospheric pressure direct current (dc) plasma jet are reported. Sweeping probes were used. The experiment was carried out using a dc non–transferred arc torch with a rod–type cathode and an anode of 5mm diameter. The torch was operated at a nominal power level...

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Detalles Bibliográficos
Autores principales: Prevosto, Leandro, Kelly, Héctor, Mancinelli, Beatriz
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: 2016
Materias:
atmospheric pressure
vortex–stabilized nitrogen plasma jet
Acceso en línea:http://hdl.handle.net/20.500.12272/999
Aporte de:
RIA - Repositorio Institucional Abierto (UTN) de Universidad Tecnológica Nacional
id I68-R174-20.500.12272-999
record_format dspace
institution Universidad Tecnológica Nacional
institution_str I-68
repository_str R-174
collection RIA - Repositorio Institucional Abierto (UTN)
language Inglés
topic atmospheric pressure
vortex–stabilized nitrogen plasma jet
spellingShingle atmospheric pressure
vortex–stabilized nitrogen plasma jet
Prevosto, Leandro
Kelly, Héctor
Mancinelli, Beatriz
Langmuir probe diagnostics of an atmospheric pressure, vortex–stabilized nitrogen plasma jet
topic_facet atmospheric pressure
vortex–stabilized nitrogen plasma jet
description Langmuir probe measurements in an atmospheric pressure direct current (dc) plasma jet are reported. Sweeping probes were used. The experiment was carried out using a dc non–transferred arc torch with a rod–type cathode and an anode of 5mm diameter. The torch was operated at a nominal power level of 15kW with a nitrogen flow rate of 25 Nl min 1. A flat ion saturation region was found in the current–voltage curve of the probe. The ion saturation current to a cylindrical probe in a high–pressure non local thermal equilibrium (LTE) plasma was modeled. Thermal effects and ionization/recombination processes inside the probe perturbed region were taken into account. Averaged radial profiles of the electron and heavy particle temperatures as well as the electron density were obtained. An electron temperature around 11 000 K, a heavy particle temperature around 9500K and an electron density of about 4 1022m 3, were found at the jet centre at 3.5mm downstream from the torch exit. Large deviations from kinetic equilibrium were found throughout the plasma jet. The electron and heavy particle temperature profiles showed good agreement with those reported in the literature by using spectroscopic techniques. It was also found that the temperature radial profile based on LTE was very close to that of the electrons. The calculations have shown that this method is particularly useful for studying spraying–type plasma jets characterized by electron temperatures in the range 9000–14 000 K. VC 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4752886]
format Artículo
publishedVersion
Artículo
author Prevosto, Leandro
Kelly, Héctor
Mancinelli, Beatriz
author_facet Prevosto, Leandro
Kelly, Héctor
Mancinelli, Beatriz
author_sort Prevosto, Leandro
title Langmuir probe diagnostics of an atmospheric pressure, vortex–stabilized nitrogen plasma jet
title_short Langmuir probe diagnostics of an atmospheric pressure, vortex–stabilized nitrogen plasma jet
title_full Langmuir probe diagnostics of an atmospheric pressure, vortex–stabilized nitrogen plasma jet
title_fullStr Langmuir probe diagnostics of an atmospheric pressure, vortex–stabilized nitrogen plasma jet
title_full_unstemmed Langmuir probe diagnostics of an atmospheric pressure, vortex–stabilized nitrogen plasma jet
title_sort langmuir probe diagnostics of an atmospheric pressure, vortex–stabilized nitrogen plasma jet
publishDate 2016
url http://hdl.handle.net/20.500.12272/999
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AT kellyhector langmuirprobediagnosticsofanatmosphericpressurevortexstabilizednitrogenplasmajet
AT mancinellibeatriz langmuirprobediagnosticsofanatmosphericpressurevortexstabilizednitrogenplasmajet
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