Optical and electrical diagnostics of microdischarges at moderate to high pressure in argon

Detalhes bibliográficos
Autor(a) principal: Sismanoglu,B.N.
Data de Publicação: 2010
Outros Autores: Cunha,C.L.A., Gomes,M.P., Caetano,R., Grigorov,K.G.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Journal of Physics
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332010000400018
Resumo: Microdischarges at moderate to high pressure in argon were investigated. A hole opening diameter of 500 µm direct current (dc) microhollow cathode discharges (MHCD) were characterized by electrical measurements and optical emission spectroscopy (OES) for pressures ranging between 90 and 800 Torr and current from 5 to 20 mA. Current-voltage characteristic curves were obtained as a function of the pressure for this hole diameter. MHCD enables stable dc discharges for molybdenum electrodes material at constant Ar + 2%H2 flow of 0.03 l/min. Optical emission spectroscopy and analysis of the spectral line broadening of plasma line emissions were performed in order to measure gas discharge parameters. Electron number densities were obtained from Hβ Balmer line ( ~ 10(14) cm-3). For the above mentioned discharge conditions, gas temperature was estimated to be 550 - 850 K from OH rotational bands. Excitation temperature was measured based on two lines method (from atomic Mo lines) and from 4p - 4s and 5p - 4s Ar radiative transitions. Hydrogen atom temperature was measured for 800 Torr ( ~ 12000 K).
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spelling Optical and electrical diagnostics of microdischarges at moderate to high pressure in argonMicrodischargesmicrohollow cathode dischargesoptical emission spectroscopyMicrodischarges at moderate to high pressure in argon were investigated. A hole opening diameter of 500 µm direct current (dc) microhollow cathode discharges (MHCD) were characterized by electrical measurements and optical emission spectroscopy (OES) for pressures ranging between 90 and 800 Torr and current from 5 to 20 mA. Current-voltage characteristic curves were obtained as a function of the pressure for this hole diameter. MHCD enables stable dc discharges for molybdenum electrodes material at constant Ar + 2%H2 flow of 0.03 l/min. Optical emission spectroscopy and analysis of the spectral line broadening of plasma line emissions were performed in order to measure gas discharge parameters. Electron number densities were obtained from Hβ Balmer line ( ~ 10(14) cm-3). For the above mentioned discharge conditions, gas temperature was estimated to be 550 - 850 K from OH rotational bands. Excitation temperature was measured based on two lines method (from atomic Mo lines) and from 4p - 4s and 5p - 4s Ar radiative transitions. Hydrogen atom temperature was measured for 800 Torr ( ~ 12000 K).Sociedade Brasileira de Física2010-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332010000400018Brazilian Journal of Physics v.40 n.4 2010reponame:Brazilian Journal of Physicsinstname:Sociedade Brasileira de Física (SBF)instacron:SBF10.1590/S0103-97332010000400018info:eu-repo/semantics/openAccessSismanoglu,B.N.Cunha,C.L.A.Gomes,M.P.Caetano,R.Grigorov,K.G.eng2011-01-03T00:00:00Zoai:scielo:S0103-97332010000400018Revistahttp://www.sbfisica.org.br/v1/home/index.php/pt/ONGhttps://old.scielo.br/oai/scielo-oai.phpsbfisica@sbfisica.org.br||sbfisica@sbfisica.org.br1678-44480103-9733opendoar:2011-01-03T00:00Brazilian Journal of Physics - Sociedade Brasileira de Física (SBF)false
dc.title.none.fl_str_mv Optical and electrical diagnostics of microdischarges at moderate to high pressure in argon
title Optical and electrical diagnostics of microdischarges at moderate to high pressure in argon
spellingShingle Optical and electrical diagnostics of microdischarges at moderate to high pressure in argon
Sismanoglu,B.N.
Microdischarges
microhollow cathode discharges
optical emission spectroscopy
title_short Optical and electrical diagnostics of microdischarges at moderate to high pressure in argon
title_full Optical and electrical diagnostics of microdischarges at moderate to high pressure in argon
title_fullStr Optical and electrical diagnostics of microdischarges at moderate to high pressure in argon
title_full_unstemmed Optical and electrical diagnostics of microdischarges at moderate to high pressure in argon
title_sort Optical and electrical diagnostics of microdischarges at moderate to high pressure in argon
author Sismanoglu,B.N.
author_facet Sismanoglu,B.N.
Cunha,C.L.A.
Gomes,M.P.
Caetano,R.
Grigorov,K.G.
author_role author
author2 Cunha,C.L.A.
Gomes,M.P.
Caetano,R.
Grigorov,K.G.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Sismanoglu,B.N.
Cunha,C.L.A.
Gomes,M.P.
Caetano,R.
Grigorov,K.G.
dc.subject.por.fl_str_mv Microdischarges
microhollow cathode discharges
optical emission spectroscopy
topic Microdischarges
microhollow cathode discharges
optical emission spectroscopy
description Microdischarges at moderate to high pressure in argon were investigated. A hole opening diameter of 500 µm direct current (dc) microhollow cathode discharges (MHCD) were characterized by electrical measurements and optical emission spectroscopy (OES) for pressures ranging between 90 and 800 Torr and current from 5 to 20 mA. Current-voltage characteristic curves were obtained as a function of the pressure for this hole diameter. MHCD enables stable dc discharges for molybdenum electrodes material at constant Ar + 2%H2 flow of 0.03 l/min. Optical emission spectroscopy and analysis of the spectral line broadening of plasma line emissions were performed in order to measure gas discharge parameters. Electron number densities were obtained from Hβ Balmer line ( ~ 10(14) cm-3). For the above mentioned discharge conditions, gas temperature was estimated to be 550 - 850 K from OH rotational bands. Excitation temperature was measured based on two lines method (from atomic Mo lines) and from 4p - 4s and 5p - 4s Ar radiative transitions. Hydrogen atom temperature was measured for 800 Torr ( ~ 12000 K).
publishDate 2010
dc.date.none.fl_str_mv 2010-12-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332010000400018
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332010000400018
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-97332010000400018
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Física
publisher.none.fl_str_mv Sociedade Brasileira de Física
dc.source.none.fl_str_mv Brazilian Journal of Physics v.40 n.4 2010
reponame:Brazilian Journal of Physics
instname:Sociedade Brasileira de Física (SBF)
instacron:SBF
instname_str Sociedade Brasileira de Física (SBF)
instacron_str SBF
institution SBF
reponame_str Brazilian Journal of Physics
collection Brazilian Journal of Physics
repository.name.fl_str_mv Brazilian Journal of Physics - Sociedade Brasileira de Física (SBF)
repository.mail.fl_str_mv sbfisica@sbfisica.org.br||sbfisica@sbfisica.org.br
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