Cathode-sheath model for field emission sustained atmospheric pressure discharges.

The cathode-sheath region of a discharge in atmospheric pressure air with a flat copper cathode is numerically investigated by using a simple fluid model that takes into account non-local ionization. The effects of the cathode temperature are considered. Results are obtained in a wide current dens...

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Detalles Bibliográficos
Autores principales: Cejas, Ezequiel, Prevosto, Leandro, Minotti, Fernando Oscar, Ferreyra, Matías, Chamorro, Juan Camilo
Formato: Artículo publisherVersion
Lenguaje:Inglés
Inglés
Publicado: 2021
Materias:
Cathode-sheath model
field emission sustained atmospheric pressure discharges
Physics of Plasmas
Acceso en línea:http://hdl.handle.net/20.500.12272/5063
Aporte de:
RIA - Repositorio Institucional Abierto (UTN) de Universidad Tecnológica Nacional
id I68-R174-20.500.12272-5063
record_format dspace
institution Universidad Tecnológica Nacional
institution_str I-68
repository_str R-174
collection RIA - Repositorio Institucional Abierto (UTN)
language Inglés
Inglés
topic Cathode-sheath model
field emission sustained atmospheric pressure discharges
Physics of Plasmas
spellingShingle Cathode-sheath model
field emission sustained atmospheric pressure discharges
Physics of Plasmas
Cejas, Ezequiel
Prevosto, Leandro
Minotti, Fernando Oscar
Ferreyra, Matías
Chamorro, Juan Camilo
Cathode-sheath model for field emission sustained atmospheric pressure discharges.
topic_facet Cathode-sheath model
field emission sustained atmospheric pressure discharges
Physics of Plasmas
description The cathode-sheath region of a discharge in atmospheric pressure air with a flat copper cathode is numerically investigated by using a simple fluid model that takes into account non-local ionization. The effects of the cathode temperature are considered. Results are obtained in a wide current density range of 1–102 A/cm2 , which spans from normal glow discharge, through abnormal glow discharge, up to the early stages of the arcing transition. It is shown that the glow-to-arc transition arises from a field-emission instability at the cathode when the cur rent density is larger than 10 A/cm2 , i.e., when the cathode field exceeds a critical value of about 45 V/lm for the conditions considered. It is also shown that the cathode temperature significantly influences the cathode-sheath region. The proposed model is validated by comparing the numerical results with available experimental data.
format Artículo
publisherVersion
author Cejas, Ezequiel
Prevosto, Leandro
Minotti, Fernando Oscar
Ferreyra, Matías
Chamorro, Juan Camilo
author_facet Cejas, Ezequiel
Prevosto, Leandro
Minotti, Fernando Oscar
Ferreyra, Matías
Chamorro, Juan Camilo
author_sort Cejas, Ezequiel
title Cathode-sheath model for field emission sustained atmospheric pressure discharges.
title_short Cathode-sheath model for field emission sustained atmospheric pressure discharges.
title_full Cathode-sheath model for field emission sustained atmospheric pressure discharges.
title_fullStr Cathode-sheath model for field emission sustained atmospheric pressure discharges.
title_full_unstemmed Cathode-sheath model for field emission sustained atmospheric pressure discharges.
title_sort cathode-sheath model for field emission sustained atmospheric pressure discharges.
publishDate 2021
url http://hdl.handle.net/20.500.12272/5063
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