Intensity ratios of H lines: Departures from the ideal conditions in the range of laser-induced breakdown spectroscopy experiments

Autores
Cruzado, Alicia; Di Rocco, Hector Omar
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In the present paper we analyze the behavior of H line intensity ratios with electron density and electron temperature in intermediate-density plasmas. We analyze the influence on the line intensity ratios of (1) the departures from local thermodynamic equilibrium (LTE) of the level population ratios, (2) the plasma opacity, and (3) the lowering of the ionization potential. We look, particularly, at the lines Hα, Hβ, Hγ, and Hδ and the energy levels involved in the corresponding atomic transitions for their use as diagnostics in laser-induced breakdown spectroscopy (LIBS) experiments. One important conclusion is that, for typical values of the plasma dimension and the electron temperature taking place in LIBS, i.e., L = 1 mm and Te = 10 000 K, respectively, the intensity ratios Hβ/Hα, Hγ/Hα and Hδ/Hα depart from the ideal values by less than 10% in the interval 0.65 × 1014 part/cm3 ≤ NHI ≤ 3.6 × 1017 part/cm3, which means 1 × 1014 part/cm3 ≤ Ne, ≤ 1 × 10 16 part/cm3 for a gas of pure hydrogen. For higher densities, the departures from ideal conditions increase very quickly due to opacity effects.
Fil: Cruzado, Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Di Rocco, Hector Omar. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Tandil. Sede Tandil del Centro de Investigaciones En Fisica E Ingenieria del Centro de la Provincia de Buenos Aires; Argentina
Materia
HYDROGEN
INDUCED BREAKDOWN SPECTROSCOPY
LIBS
PLASMA DIAGNOSTICS
PLASMA SPECTROSCOPY
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:11336/179754
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/179754
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Intensity ratios of H lines: Departures from the ideal conditions in the range of laser-induced breakdown spectroscopy experimentsCruzado, AliciaDi Rocco, Hector OmarHYDROGENINDUCED BREAKDOWN SPECTROSCOPYLIBSPLASMA DIAGNOSTICSPLASMA SPECTROSCOPYhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1In the present paper we analyze the behavior of H line intensity ratios with electron density and electron temperature in intermediate-density plasmas. We analyze the influence on the line intensity ratios of (1) the departures from local thermodynamic equilibrium (LTE) of the level population ratios, (2) the plasma opacity, and (3) the lowering of the ionization potential. We look, particularly, at the lines Hα, Hβ, Hγ, and Hδ and the energy levels involved in the corresponding atomic transitions for their use as diagnostics in laser-induced breakdown spectroscopy (LIBS) experiments. One important conclusion is that, for typical values of the plasma dimension and the electron temperature taking place in LIBS, i.e., L = 1 mm and Te = 10 000 K, respectively, the intensity ratios Hβ/Hα, Hγ/Hα and Hδ/Hα depart from the ideal values by less than 10% in the interval 0.65 × 1014 part/cm3 ≤ NHI ≤ 3.6 × 1017 part/cm3, which means 1 × 1014 part/cm3 ≤ Ne, ≤ 1 × 10 16 part/cm3 for a gas of pure hydrogen. For higher densities, the departures from ideal conditions increase very quickly due to opacity effects.Fil: Cruzado, Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaFil: Di Rocco, Hector Omar. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Tandil. Sede Tandil del Centro de Investigaciones En Fisica E Ingenieria del Centro de la Provincia de Buenos Aires; ArgentinaSoc Applied Spectroscopy2007-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/179754Cruzado, Alicia; Di Rocco, Hector Omar; Intensity ratios of H lines: Departures from the ideal conditions in the range of laser-induced breakdown spectroscopy experiments; Soc Applied Spectroscopy; Applied Spectroscopy; 61; 10; 12-2007; 1084-10920003-7028CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1366/000370207782217662info:eu-repo/semantics/altIdentifier/url/https://journals.sagepub.com/doi/10.1366/000370207782217662info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:29:15Zoai:ri.conicet.gov.ar:11336/179754instacron: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:34982025-10-15 15:29:16.023CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Intensity ratios of H lines: Departures from the ideal conditions in the range of laser-induced breakdown spectroscopy experiments
title Intensity ratios of H lines: Departures from the ideal conditions in the range of laser-induced breakdown spectroscopy experiments
spellingShingle Intensity ratios of H lines: Departures from the ideal conditions in the range of laser-induced breakdown spectroscopy experiments
Cruzado, Alicia
HYDROGEN
INDUCED BREAKDOWN SPECTROSCOPY
LIBS
PLASMA DIAGNOSTICS
PLASMA SPECTROSCOPY
title_short Intensity ratios of H lines: Departures from the ideal conditions in the range of laser-induced breakdown spectroscopy experiments
title_full Intensity ratios of H lines: Departures from the ideal conditions in the range of laser-induced breakdown spectroscopy experiments
title_fullStr Intensity ratios of H lines: Departures from the ideal conditions in the range of laser-induced breakdown spectroscopy experiments
title_full_unstemmed Intensity ratios of H lines: Departures from the ideal conditions in the range of laser-induced breakdown spectroscopy experiments
title_sort Intensity ratios of H lines: Departures from the ideal conditions in the range of laser-induced breakdown spectroscopy experiments
dc.creator.none.fl_str_mv Cruzado, Alicia
Di Rocco, Hector Omar
author Cruzado, Alicia
author_facet Cruzado, Alicia
Di Rocco, Hector Omar
author_role author
author2 Di Rocco, Hector Omar
author2_role author
dc.subject.none.fl_str_mv HYDROGEN
INDUCED BREAKDOWN SPECTROSCOPY
LIBS
PLASMA DIAGNOSTICS
PLASMA SPECTROSCOPY
topic HYDROGEN
INDUCED BREAKDOWN SPECTROSCOPY
LIBS
PLASMA DIAGNOSTICS
PLASMA SPECTROSCOPY
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In the present paper we analyze the behavior of H line intensity ratios with electron density and electron temperature in intermediate-density plasmas. We analyze the influence on the line intensity ratios of (1) the departures from local thermodynamic equilibrium (LTE) of the level population ratios, (2) the plasma opacity, and (3) the lowering of the ionization potential. We look, particularly, at the lines Hα, Hβ, Hγ, and Hδ and the energy levels involved in the corresponding atomic transitions for their use as diagnostics in laser-induced breakdown spectroscopy (LIBS) experiments. One important conclusion is that, for typical values of the plasma dimension and the electron temperature taking place in LIBS, i.e., L = 1 mm and Te = 10 000 K, respectively, the intensity ratios Hβ/Hα, Hγ/Hα and Hδ/Hα depart from the ideal values by less than 10% in the interval 0.65 × 1014 part/cm3 ≤ NHI ≤ 3.6 × 1017 part/cm3, which means 1 × 1014 part/cm3 ≤ Ne, ≤ 1 × 10 16 part/cm3 for a gas of pure hydrogen. For higher densities, the departures from ideal conditions increase very quickly due to opacity effects.
Fil: Cruzado, Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Di Rocco, Hector Omar. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Tandil. Sede Tandil del Centro de Investigaciones En Fisica E Ingenieria del Centro de la Provincia de Buenos Aires; Argentina
description In the present paper we analyze the behavior of H line intensity ratios with electron density and electron temperature in intermediate-density plasmas. We analyze the influence on the line intensity ratios of (1) the departures from local thermodynamic equilibrium (LTE) of the level population ratios, (2) the plasma opacity, and (3) the lowering of the ionization potential. We look, particularly, at the lines Hα, Hβ, Hγ, and Hδ and the energy levels involved in the corresponding atomic transitions for their use as diagnostics in laser-induced breakdown spectroscopy (LIBS) experiments. One important conclusion is that, for typical values of the plasma dimension and the electron temperature taking place in LIBS, i.e., L = 1 mm and Te = 10 000 K, respectively, the intensity ratios Hβ/Hα, Hγ/Hα and Hδ/Hα depart from the ideal values by less than 10% in the interval 0.65 × 1014 part/cm3 ≤ NHI ≤ 3.6 × 1017 part/cm3, which means 1 × 1014 part/cm3 ≤ Ne, ≤ 1 × 10 16 part/cm3 for a gas of pure hydrogen. For higher densities, the departures from ideal conditions increase very quickly due to opacity effects.
publishDate 2007
dc.date.none.fl_str_mv 2007-12
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/11336/179754
Cruzado, Alicia; Di Rocco, Hector Omar; Intensity ratios of H lines: Departures from the ideal conditions in the range of laser-induced breakdown spectroscopy experiments; Soc Applied Spectroscopy; Applied Spectroscopy; 61; 10; 12-2007; 1084-1092
0003-7028
CONICET Digital
CONICET
url http://hdl.handle.net/11336/179754
identifier_str_mv Cruzado, Alicia; Di Rocco, Hector Omar; Intensity ratios of H lines: Departures from the ideal conditions in the range of laser-induced breakdown spectroscopy experiments; Soc Applied Spectroscopy; Applied Spectroscopy; 61; 10; 12-2007; 1084-1092
0003-7028
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1366/000370207782217662
info:eu-repo/semantics/altIdentifier/url/https://journals.sagepub.com/doi/10.1366/000370207782217662
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
application/pdf
dc.publisher.none.fl_str_mv Soc Applied Spectroscopy
publisher.none.fl_str_mv Soc Applied Spectroscopy
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
_version_ 1846083432177729536
score 13.22299

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