On the gas heating mechanism for the fast anode arc reattachment in a non-transferred arc plasma torch operating with nitrogen gas in the restrike mode

Autores
Prevosto, Leandro; Kelly, Hector Juan; Mancinelli, Beatriz Rosa; Chamorro, J. C.
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The present work provides a detailed kinetic analysis of the time-resolved dynamics of the gas heating during the arc reattachment in nitrogen gas in order to understand the main processes leading to such a fast reattachment. The model includes gas heating due to the relaxation of the energy stored in the vibrational as well as the electronic modes of the molecules. The results show that the anode arc reattachment is essentiality a threshold process, corresponding to a reduced electric field value of E/N ~ 40 Td for the plasma discharge conditions considered in this work. The arc reattachment is triggered by a vibrational instability whose development requires a time of the order of 100 µs. For E/N < 80–100 Td, most of the electron energy is transferred to gas heating through the mechanism of vibrational–translational relaxation. For larger values of E/N the electronic–translational energy relaxation mechanism produces a further intensification of the gas heating. The sharp increase of the gas heating rate during the last few µs of the vibrational instability give rises to a sudden transition from a diffuse (glow-like) discharge to a constricted arc with a high current density (~107 A/m2). This sudden increase in the current density gives rise to a new anode attachment closer to the cathode (where the voltage drop between the original arc and the anode is the largest) thus causing the decay of the old arc spot.
Fil: Prevosto, Leandro. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Kelly, Hector Juan. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física del Plasma. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física del Plasma; Argentina
Fil: Mancinelli, Beatriz Rosa. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto; Argentina
Fil: Chamorro, J. C.. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto; Argentina
Materia
Plasma Torch
Restrike Mode
Nitrogen
Gas Heating
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/19313
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling On the gas heating mechanism for the fast anode arc reattachment in a non-transferred arc plasma torch operating with nitrogen gas in the restrike modePrevosto, LeandroKelly, Hector JuanMancinelli, Beatriz RosaChamorro, J. C.Plasma TorchRestrike ModeNitrogenGas Heatinghttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The present work provides a detailed kinetic analysis of the time-resolved dynamics of the gas heating during the arc reattachment in nitrogen gas in order to understand the main processes leading to such a fast reattachment. The model includes gas heating due to the relaxation of the energy stored in the vibrational as well as the electronic modes of the molecules. The results show that the anode arc reattachment is essentiality a threshold process, corresponding to a reduced electric field value of E/N ~ 40 Td for the plasma discharge conditions considered in this work. The arc reattachment is triggered by a vibrational instability whose development requires a time of the order of 100 µs. For E/N < 80–100 Td, most of the electron energy is transferred to gas heating through the mechanism of vibrational–translational relaxation. For larger values of E/N the electronic–translational energy relaxation mechanism produces a further intensification of the gas heating. The sharp increase of the gas heating rate during the last few µs of the vibrational instability give rises to a sudden transition from a diffuse (glow-like) discharge to a constricted arc with a high current density (~107 A/m2). This sudden increase in the current density gives rise to a new anode attachment closer to the cathode (where the voltage drop between the original arc and the anode is the largest) thus causing the decay of the old arc spot.Fil: Prevosto, Leandro. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Kelly, Hector Juan. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física del Plasma. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física del Plasma; ArgentinaFil: Mancinelli, Beatriz Rosa. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto; ArgentinaFil: Chamorro, J. C.. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto; ArgentinaSpringer2015-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/19313Prevosto, Leandro; Kelly, Hector Juan; Mancinelli, Beatriz Rosa; Chamorro, J. C.; On the gas heating mechanism for the fast anode arc reattachment in a non-transferred arc plasma torch operating with nitrogen gas in the restrike mode; Springer; Plasma Chemistry And Plasma Processing; 35; 6; 10-2015; 1057-10700272-43241572-8986CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1007/s11090-015-9644-7info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs11090-015-9644-7info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:29:24Zoai:ri.conicet.gov.ar:11336/19313instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:29:24.915CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv On the gas heating mechanism for the fast anode arc reattachment in a non-transferred arc plasma torch operating with nitrogen gas in the restrike mode
title On the gas heating mechanism for the fast anode arc reattachment in a non-transferred arc plasma torch operating with nitrogen gas in the restrike mode
spellingShingle On the gas heating mechanism for the fast anode arc reattachment in a non-transferred arc plasma torch operating with nitrogen gas in the restrike mode
Prevosto, Leandro
Plasma Torch
Restrike Mode
Nitrogen
Gas Heating
title_short On the gas heating mechanism for the fast anode arc reattachment in a non-transferred arc plasma torch operating with nitrogen gas in the restrike mode
title_full On the gas heating mechanism for the fast anode arc reattachment in a non-transferred arc plasma torch operating with nitrogen gas in the restrike mode
title_fullStr On the gas heating mechanism for the fast anode arc reattachment in a non-transferred arc plasma torch operating with nitrogen gas in the restrike mode
title_full_unstemmed On the gas heating mechanism for the fast anode arc reattachment in a non-transferred arc plasma torch operating with nitrogen gas in the restrike mode
title_sort On the gas heating mechanism for the fast anode arc reattachment in a non-transferred arc plasma torch operating with nitrogen gas in the restrike mode
dc.creator.none.fl_str_mv Prevosto, Leandro
Kelly, Hector Juan
Mancinelli, Beatriz Rosa
Chamorro, J. C.
author Prevosto, Leandro
author_facet Prevosto, Leandro
Kelly, Hector Juan
Mancinelli, Beatriz Rosa
Chamorro, J. C.
author_role author
author2 Kelly, Hector Juan
Mancinelli, Beatriz Rosa
Chamorro, J. C.
author2_role author
author
author
dc.subject.none.fl_str_mv Plasma Torch
Restrike Mode
Nitrogen
Gas Heating
topic Plasma Torch
Restrike Mode
Nitrogen
Gas Heating
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The present work provides a detailed kinetic analysis of the time-resolved dynamics of the gas heating during the arc reattachment in nitrogen gas in order to understand the main processes leading to such a fast reattachment. The model includes gas heating due to the relaxation of the energy stored in the vibrational as well as the electronic modes of the molecules. The results show that the anode arc reattachment is essentiality a threshold process, corresponding to a reduced electric field value of E/N ~ 40 Td for the plasma discharge conditions considered in this work. The arc reattachment is triggered by a vibrational instability whose development requires a time of the order of 100 µs. For E/N < 80–100 Td, most of the electron energy is transferred to gas heating through the mechanism of vibrational–translational relaxation. For larger values of E/N the electronic–translational energy relaxation mechanism produces a further intensification of the gas heating. The sharp increase of the gas heating rate during the last few µs of the vibrational instability give rises to a sudden transition from a diffuse (glow-like) discharge to a constricted arc with a high current density (~107 A/m2). This sudden increase in the current density gives rise to a new anode attachment closer to the cathode (where the voltage drop between the original arc and the anode is the largest) thus causing the decay of the old arc spot.
Fil: Prevosto, Leandro. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Kelly, Hector Juan. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física del Plasma. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física del Plasma; Argentina
Fil: Mancinelli, Beatriz Rosa. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto; Argentina
Fil: Chamorro, J. C.. Universidad Tecnológica Nacional. Facultad Regional Venado Tuerto; Argentina
description The present work provides a detailed kinetic analysis of the time-resolved dynamics of the gas heating during the arc reattachment in nitrogen gas in order to understand the main processes leading to such a fast reattachment. The model includes gas heating due to the relaxation of the energy stored in the vibrational as well as the electronic modes of the molecules. The results show that the anode arc reattachment is essentiality a threshold process, corresponding to a reduced electric field value of E/N ~ 40 Td for the plasma discharge conditions considered in this work. The arc reattachment is triggered by a vibrational instability whose development requires a time of the order of 100 µs. For E/N < 80–100 Td, most of the electron energy is transferred to gas heating through the mechanism of vibrational–translational relaxation. For larger values of E/N the electronic–translational energy relaxation mechanism produces a further intensification of the gas heating. The sharp increase of the gas heating rate during the last few µs of the vibrational instability give rises to a sudden transition from a diffuse (glow-like) discharge to a constricted arc with a high current density (~107 A/m2). This sudden increase in the current density gives rise to a new anode attachment closer to the cathode (where the voltage drop between the original arc and the anode is the largest) thus causing the decay of the old arc spot.
publishDate 2015
dc.date.none.fl_str_mv 2015-10
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/19313
Prevosto, Leandro; Kelly, Hector Juan; Mancinelli, Beatriz Rosa; Chamorro, J. C.; On the gas heating mechanism for the fast anode arc reattachment in a non-transferred arc plasma torch operating with nitrogen gas in the restrike mode; Springer; Plasma Chemistry And Plasma Processing; 35; 6; 10-2015; 1057-1070
0272-4324
1572-8986
CONICET Digital
CONICET
url http://hdl.handle.net/11336/19313
identifier_str_mv Prevosto, Leandro; Kelly, Hector Juan; Mancinelli, Beatriz Rosa; Chamorro, J. C.; On the gas heating mechanism for the fast anode arc reattachment in a non-transferred arc plasma torch operating with nitrogen gas in the restrike mode; Springer; Plasma Chemistry And Plasma Processing; 35; 6; 10-2015; 1057-1070
0272-4324
1572-8986
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1007/s11090-015-9644-7
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs11090-015-9644-7
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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