Investigation of the relevant kinetic processes in the initial stage of a double-arcing instability in oxygen plasmas.

Autores
Mancinelli, Beatriz; Prevosto, Leandro; Chamorro, Juan Camilo; Minotti, Fernando; Kelly, Héctor
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión aceptada
Descripción
A numerical investigation of the kinetic processes in the initial (nanosecond range) stage of the double-arcing instability was developed. The plasma-sheath boundary region of an oxygen operated cutting torch was considered. The energy balance and chemistry processes in the dis charge were described. It is shown that the double-arcing instability is a sudden transition from a diffuse (glow-like) discharge to a constricted (arc-like) discharge in the plasma-sheath boundary region arising from a field-emission instability. A critical electric field value of 107 V/m was found at the cathodic part of the nozzle wall under the conditions considered. The field-emission instability drives in turn a fast electronic-to-translational energy relaxation mechanism, giving rise to a very fast gas heating rate of at least 109 K/s, mainly due to reactions of preliminary dissocia tion of oxygen molecules via the highly excited electronic state populated by electron impact. It is expected that this fast oxygen heating rate further stimulates the discharge contraction through the thermal instability mechanism.
Fil: Mancinelli, Beatriz. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe; Argentina.
Fil: Prevosto, Leandro. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. CONICET. Santa Fe; Argentina.
Fil: Chamorro, Juan Camilo. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe; Argentina.
Fil: Minotti, Fernando. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física. Argentina.
Fil: Kelly, Héctor. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto Grupo de Descargas Eléctricas, Departamento Ingeniería Electromecánica. Santa Fe; Argentina.
Peer Reviewed
Fuente
Physics of Plasmas 25, 054504 (2018)
Materia
Double-arcing.
Oxygen plasmas.
Investigation.
Nivel de accesibilidad
acceso abierto
Condiciones de uso
2024-04-04T23:58:58Z
Repositorio
Repositorio Institucional Abierto (UTN)
Institución
Universidad Tecnológica Nacional
OAI Identificador
oai:ria.utn.edu.ar:20.500.12272/10344
Acceder
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network_acronym_str RIAUTN
repository_id_str a
network_name_str Repositorio Institucional Abierto (UTN)
spelling Investigation of the relevant kinetic processes in the initial stage of a double-arcing instability in oxygen plasmas.Mancinelli, BeatrizPrevosto, LeandroChamorro, Juan CamiloMinotti, FernandoKelly, HéctorDouble-arcing.Oxygen plasmas.Investigation.A numerical investigation of the kinetic processes in the initial (nanosecond range) stage of the double-arcing instability was developed. The plasma-sheath boundary region of an oxygen operated cutting torch was considered. The energy balance and chemistry processes in the dis charge were described. It is shown that the double-arcing instability is a sudden transition from a diffuse (glow-like) discharge to a constricted (arc-like) discharge in the plasma-sheath boundary region arising from a field-emission instability. A critical electric field value of 107 V/m was found at the cathodic part of the nozzle wall under the conditions considered. The field-emission instability drives in turn a fast electronic-to-translational energy relaxation mechanism, giving rise to a very fast gas heating rate of at least 109 K/s, mainly due to reactions of preliminary dissocia tion of oxygen molecules via the highly excited electronic state populated by electron impact. It is expected that this fast oxygen heating rate further stimulates the discharge contraction through the thermal instability mechanism.Fil: Mancinelli, Beatriz. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe; Argentina.Fil: Prevosto, Leandro. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. CONICET. Santa Fe; Argentina.Fil: Chamorro, Juan Camilo. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe; Argentina.Fil: Minotti, Fernando. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física. Argentina.Fil: Kelly, Héctor. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto Grupo de Descargas Eléctricas, Departamento Ingeniería Electromecánica. Santa Fe; Argentina.Peer Reviewed2024-04-04T23:58:58Z2024-04-04T23:58:58Z2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articulopdfapplication/pdfPhysics of Plasmas.http://hdl.handle.net/20.500.12272/1034410.1063/1.5032220.Physics of Plasmas 25, 054504 (2018)reponame:Repositorio Institucional Abierto (UTN)instname:Universidad Tecnológica Nacionalenginfo:eu-repo/semantics/openAccess2024-04-04T23:58:58Zhttp://creativecommons.org/licenses/by-nc-nd/4.0/Attribution-NonCommercial-NoDerivatives 4.0 InternacionalPrevosto, Leandro.Creative Commons http://creativecommons.org/licenses/by-nc-nd/4.0/ Attribution-NonCommercial-NoDerivatives 4.0 Internacional Este trabajo puede ser utilizado con fines académicos y de estudio.2026-09-24T12:45:33Zoai:ria.utn.edu.ar:20.500.12272/10344instacron:UTNInstitucionalhttp://ria.utn.edu.ar/Universidad públicaNo correspondehttp://ria.utn.edu.ar/oaigestionria@rec.utn.edu.ar; fsuarez@rec.utn.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:a2026-09-24 12:45:33.707Repositorio Institucional Abierto (UTN) - Universidad Tecnológica Nacionalfalse
dc.title.none.fl_str_mv Investigation of the relevant kinetic processes in the initial stage of a double-arcing instability in oxygen plasmas.
title Investigation of the relevant kinetic processes in the initial stage of a double-arcing instability in oxygen plasmas.
spellingShingle Investigation of the relevant kinetic processes in the initial stage of a double-arcing instability in oxygen plasmas.
Mancinelli, Beatriz
Double-arcing.
Oxygen plasmas.
Investigation.
title_short Investigation of the relevant kinetic processes in the initial stage of a double-arcing instability in oxygen plasmas.
title_full Investigation of the relevant kinetic processes in the initial stage of a double-arcing instability in oxygen plasmas.
title_fullStr Investigation of the relevant kinetic processes in the initial stage of a double-arcing instability in oxygen plasmas.
title_full_unstemmed Investigation of the relevant kinetic processes in the initial stage of a double-arcing instability in oxygen plasmas.
title_sort Investigation of the relevant kinetic processes in the initial stage of a double-arcing instability in oxygen plasmas.
dc.creator.none.fl_str_mv Mancinelli, Beatriz
Prevosto, Leandro
Chamorro, Juan Camilo
Minotti, Fernando
Kelly, Héctor
author Mancinelli, Beatriz
author_facet Mancinelli, Beatriz
Prevosto, Leandro
Chamorro, Juan Camilo
Minotti, Fernando
Kelly, Héctor
author_role author
author2 Prevosto, Leandro
Chamorro, Juan Camilo
Minotti, Fernando
Kelly, Héctor
author2_role author
author
author
author
dc.subject.none.fl_str_mv Double-arcing.
Oxygen plasmas.
Investigation.
topic Double-arcing.
Oxygen plasmas.
Investigation.
dc.description.none.fl_txt_mv A numerical investigation of the kinetic processes in the initial (nanosecond range) stage of the double-arcing instability was developed. The plasma-sheath boundary region of an oxygen operated cutting torch was considered. The energy balance and chemistry processes in the dis charge were described. It is shown that the double-arcing instability is a sudden transition from a diffuse (glow-like) discharge to a constricted (arc-like) discharge in the plasma-sheath boundary region arising from a field-emission instability. A critical electric field value of 107 V/m was found at the cathodic part of the nozzle wall under the conditions considered. The field-emission instability drives in turn a fast electronic-to-translational energy relaxation mechanism, giving rise to a very fast gas heating rate of at least 109 K/s, mainly due to reactions of preliminary dissocia tion of oxygen molecules via the highly excited electronic state populated by electron impact. It is expected that this fast oxygen heating rate further stimulates the discharge contraction through the thermal instability mechanism.
Fil: Mancinelli, Beatriz. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe; Argentina.
Fil: Prevosto, Leandro. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. CONICET. Santa Fe; Argentina.
Fil: Chamorro, Juan Camilo. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe; Argentina.
Fil: Minotti, Fernando. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física. Argentina.
Fil: Kelly, Héctor. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto Grupo de Descargas Eléctricas, Departamento Ingeniería Electromecánica. Santa Fe; Argentina.
Peer Reviewed
description A numerical investigation of the kinetic processes in the initial (nanosecond range) stage of the double-arcing instability was developed. The plasma-sheath boundary region of an oxygen operated cutting torch was considered. The energy balance and chemistry processes in the dis charge were described. It is shown that the double-arcing instability is a sudden transition from a diffuse (glow-like) discharge to a constricted (arc-like) discharge in the plasma-sheath boundary region arising from a field-emission instability. A critical electric field value of 107 V/m was found at the cathodic part of the nozzle wall under the conditions considered. The field-emission instability drives in turn a fast electronic-to-translational energy relaxation mechanism, giving rise to a very fast gas heating rate of at least 109 K/s, mainly due to reactions of preliminary dissocia tion of oxygen molecules via the highly excited electronic state populated by electron impact. It is expected that this fast oxygen heating rate further stimulates the discharge contraction through the thermal instability mechanism.
publishDate 2018
dc.date.none.fl_str_mv 2018
2024-04-04T23:58:58Z
2024-04-04T23:58:58Z
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv Physics of Plasmas.
http://hdl.handle.net/20.500.12272/10344
10.1063/1.5032220.
identifier_str_mv Physics of Plasmas.
10.1063/1.5032220.
url http://hdl.handle.net/20.500.12272/10344
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
2024-04-04T23:58:58Z
http://creativecommons.org/licenses/by-nc-nd/4.0/
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Prevosto, Leandro.
Creative Commons http://creativecommons.org/licenses/by-nc-nd/4.0/ Attribution-NonCommercial-NoDerivatives 4.0 Internacional Este trabajo puede ser utilizado con fines académicos y de estudio.
eu_rights_str_mv openAccess
rights_invalid_str_mv 2024-04-04T23:58:58Z
http://creativecommons.org/licenses/by-nc-nd/4.0/
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Prevosto, Leandro.
Creative Commons http://creativecommons.org/licenses/by-nc-nd/4.0/ Attribution-NonCommercial-NoDerivatives 4.0 Internacional Este trabajo puede ser utilizado con fines académicos y de estudio.
dc.format.none.fl_str_mv pdf
application/pdf
dc.source.none.fl_str_mv Physics of Plasmas 25, 054504 (2018)
reponame:Repositorio Institucional Abierto (UTN)
instname:Universidad Tecnológica Nacional
reponame_str Repositorio Institucional Abierto (UTN)
collection Repositorio Institucional Abierto (UTN)
instname_str Universidad Tecnológica Nacional
repository.name.fl_str_mv Repositorio Institucional Abierto (UTN) - Universidad Tecnológica Nacional
repository.mail.fl_str_mv gestionria@rec.utn.edu.ar; fsuarez@rec.utn.edu.ar
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score 13.265058

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