On the dynamics of the space-charge layer inside the nozzle of a cutting torch and its relation with the “non-destructive” double-arcing phenomenon

Autores
Prevosto, Leandro; Kelly, Héctor; Mancinelli, Beatriz
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión aceptada
Descripción
Experimental observations on the plasma dynamics inside the nozzle of a 30 A oxygen cutting torch operated at conditions close to the double arcing are reported. It is employed a technique previously developed in our laboratory consisting in using the nozzle as a large-sized Langmuir probe. Based on the behavior of the ion current signal and simple estimations, it is concluded that (1) the non-equilibrium plasma inside the nozzle is far from the steady state in time, in contrast to what is frequently assumed. The power supply ripple was identified as the main fluctuations source and (2) large-scale plasma fluctuations inside the nozzle could cause transient (total duration of the order of 100 ls) Townsend avalanches developing in the space-charge layer located between the arc plasma and the nozzle wall. Such events trigger the so called non-destructive double-arcing phenomena without appealing to the presence of insulating films deposited inside the nozzle orifice, as was previously proposed in the literature.
Fil: Prevosto, Leandro. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe; Argentina.
Fil: Kelly, Héctor. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. CONICET. Santa Fe; Argentina.
Fil: Mancinelli, Beatriz. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe; Argentina.
Peer Reviewed
Fuente
Journal of Applied Physics 110, 083302 (2011)
Materia
Langmuir probes.
Space-charge.
Plasma.
Nivel de accesibilidad
acceso abierto
Condiciones de uso
2024-03-11T20:03:20Z
Repositorio
Repositorio Institucional Abierto (UTN)
Institución
Universidad Tecnológica Nacional
OAI Identificador
oai:ria.utn.edu.ar:20.500.12272/9689
Acceder
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network_acronym_str RIAUTN
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network_name_str Repositorio Institucional Abierto (UTN)
spelling On the dynamics of the space-charge layer inside the nozzle of a cutting torch and its relation with the “non-destructive” double-arcing phenomenonPrevosto, LeandroKelly, HéctorMancinelli, BeatrizLangmuir probes.Space-charge.Plasma.Experimental observations on the plasma dynamics inside the nozzle of a 30 A oxygen cutting torch operated at conditions close to the double arcing are reported. It is employed a technique previously developed in our laboratory consisting in using the nozzle as a large-sized Langmuir probe. Based on the behavior of the ion current signal and simple estimations, it is concluded that (1) the non-equilibrium plasma inside the nozzle is far from the steady state in time, in contrast to what is frequently assumed. The power supply ripple was identified as the main fluctuations source and (2) large-scale plasma fluctuations inside the nozzle could cause transient (total duration of the order of 100 ls) Townsend avalanches developing in the space-charge layer located between the arc plasma and the nozzle wall. Such events trigger the so called non-destructive double-arcing phenomena without appealing to the presence of insulating films deposited inside the nozzle orifice, as was previously proposed in the literature.Fil: Prevosto, Leandro. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe; Argentina.Fil: Kelly, Héctor. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. CONICET. Santa Fe; Argentina.Fil: Mancinelli, Beatriz. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe; Argentina.Peer Reviewed2024-03-11T20:03:20Z2024-03-11T20:03:20Z2011info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articulopdfapplication/pdfJOURNAL OF APPLIED PHYSICShttp://hdl.handle.net/20.500.12272/968910.1063/1.3651398Journal of Applied Physics 110, 083302 (2011)reponame:Repositorio Institucional Abierto (UTN)instname:Universidad Tecnológica Nacionalenginfo:eu-repo/semantics/openAccess2024-03-11T20:03:20Zhttp://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.2026-09-24T12:44:56Zoai:ria.utn.edu.ar:20.500.12272/9689instacron: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 12:44:58.034Repositorio Institucional Abierto (UTN) - Universidad Tecnológica Nacionalfalse
dc.title.none.fl_str_mv On the dynamics of the space-charge layer inside the nozzle of a cutting torch and its relation with the “non-destructive” double-arcing phenomenon
title On the dynamics of the space-charge layer inside the nozzle of a cutting torch and its relation with the “non-destructive” double-arcing phenomenon
spellingShingle On the dynamics of the space-charge layer inside the nozzle of a cutting torch and its relation with the “non-destructive” double-arcing phenomenon
Prevosto, Leandro
Langmuir probes.
Space-charge.
Plasma.
title_short On the dynamics of the space-charge layer inside the nozzle of a cutting torch and its relation with the “non-destructive” double-arcing phenomenon
title_full On the dynamics of the space-charge layer inside the nozzle of a cutting torch and its relation with the “non-destructive” double-arcing phenomenon
title_fullStr On the dynamics of the space-charge layer inside the nozzle of a cutting torch and its relation with the “non-destructive” double-arcing phenomenon
title_full_unstemmed On the dynamics of the space-charge layer inside the nozzle of a cutting torch and its relation with the “non-destructive” double-arcing phenomenon
title_sort On the dynamics of the space-charge layer inside the nozzle of a cutting torch and its relation with the “non-destructive” double-arcing phenomenon
dc.creator.none.fl_str_mv Prevosto, Leandro
Kelly, Héctor
Mancinelli, Beatriz
author Prevosto, Leandro
author_facet Prevosto, Leandro
Kelly, Héctor
Mancinelli, Beatriz
author_role author
author2 Kelly, Héctor
Mancinelli, Beatriz
author2_role author
author
dc.subject.none.fl_str_mv Langmuir probes.
Space-charge.
Plasma.
topic Langmuir probes.
Space-charge.
Plasma.
dc.description.none.fl_txt_mv Experimental observations on the plasma dynamics inside the nozzle of a 30 A oxygen cutting torch operated at conditions close to the double arcing are reported. It is employed a technique previously developed in our laboratory consisting in using the nozzle as a large-sized Langmuir probe. Based on the behavior of the ion current signal and simple estimations, it is concluded that (1) the non-equilibrium plasma inside the nozzle is far from the steady state in time, in contrast to what is frequently assumed. The power supply ripple was identified as the main fluctuations source and (2) large-scale plasma fluctuations inside the nozzle could cause transient (total duration of the order of 100 ls) Townsend avalanches developing in the space-charge layer located between the arc plasma and the nozzle wall. Such events trigger the so called non-destructive double-arcing phenomena without appealing to the presence of insulating films deposited inside the nozzle orifice, as was previously proposed in the literature.
Fil: Prevosto, Leandro. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe; Argentina.
Fil: Kelly, Héctor. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. CONICET. Santa Fe; Argentina.
Fil: Mancinelli, Beatriz. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto. Grupo de Descargas Eléctricas. Departamento Ingeniería Electromecánica. Santa Fe; Argentina.
Peer Reviewed
description Experimental observations on the plasma dynamics inside the nozzle of a 30 A oxygen cutting torch operated at conditions close to the double arcing are reported. It is employed a technique previously developed in our laboratory consisting in using the nozzle as a large-sized Langmuir probe. Based on the behavior of the ion current signal and simple estimations, it is concluded that (1) the non-equilibrium plasma inside the nozzle is far from the steady state in time, in contrast to what is frequently assumed. The power supply ripple was identified as the main fluctuations source and (2) large-scale plasma fluctuations inside the nozzle could cause transient (total duration of the order of 100 ls) Townsend avalanches developing in the space-charge layer located between the arc plasma and the nozzle wall. Such events trigger the so called non-destructive double-arcing phenomena without appealing to the presence of insulating films deposited inside the nozzle orifice, as was previously proposed in the literature.
publishDate 2011
dc.date.none.fl_str_mv 2011
2024-03-11T20:03:20Z
2024-03-11T20:03:20Z
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 JOURNAL OF APPLIED PHYSICS
http://hdl.handle.net/20.500.12272/9689
10.1063/1.3651398
identifier_str_mv JOURNAL OF APPLIED PHYSICS
10.1063/1.3651398
url http://hdl.handle.net/20.500.12272/9689
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
2024-03-11T20:03:20Z
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 2024-03-11T20:03:20Z
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 Journal of Applied Physics 110, 083302 (2011)
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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