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Multiple solutions in the theory of dc glow discharges

2010Journal article Open access
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dc.contributor.authorAlmeida, P. G. C.
dc.contributor.authorBenilov, M. S.
dc.contributor.authorFaria, M. J.
dc.date.accessioned2022-08-31T14:52:51Z
dc.date.available2022-08-31T14:52:51Z
dc.date.issued2010
dc.description.abstractMultiple steady-state solutions existing in the theory of dc glow discharges are computed for the first time. The simulations are performed in 2D in the framework of the simplest self-consistent model, which accounts for a single ion species and employs the drift–diffusion approximation. Solutions describing up to nine different modes were found in the case where losses of the ions and the electrons due to diffusion to the wall were neglected. One mode is 1D, exists at all values of the discharge current, and represents in essence the well-known solution of von Engel and Steenbeck. The other eight modes are axially symmetric, exist in limited ranges of the discharge current, and are associated with different patterns of current spots on the cathode. The mode with a spot at the centre of the cathode exhibits a well pronounced effect of normal current density. Account of diffusion losses affects the solutions dramatically: the number of solutions is reduced, a mode appears that exists at all discharge currents and comprises the Townsend, subnormal, normal and abnormal discharges. The solutions that exist in limited current ranges describe patterns, and these patterns seem to represent axially symmetric analogues of the 3D patterns observed in dc glow microdischarges in xenon.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationAlmeida, P. G., Benilov, M. S., & Faria, M. J. (2010). Multiple solutions in the theory of dc glow discharges. Plasma Sources Science and Technology, 19(2), 025019. DOI: 10.1088/0963-0252/19/2/025019pt_PT
dc.identifier.doi10.1088/0963-0252/19/2/025019pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/4538
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherIOP Publishingpt_PT
dc.relationCathode spots in high-pressure DC gas discharges: self-organization phenomena
dc.relationESTUDO DOS MODOS DE TRANSFERÊNCIA DE CORRENTE AOS CÁTODOS DAS DESCARGAS DE GÁS
dc.relationESTUDO DA ESTABILIDADE DE TRANSFERÊNCIA DE CORRENTE AOS ELÉCTRODOS NAS DESCARGAS DE GÁS
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectTheory of dc glow dischargespt_PT
dc.subjectDC glow dischargespt_PT
dc.subjectGlow dischargespt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências Extas e da Engenhariapt_PT
dc.titleMultiple solutions in the theory of dc glow dischargespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCathode spots in high-pressure DC gas discharges: self-organization phenomena
oaire.awardTitleESTUDO DOS MODOS DE TRANSFERÊNCIA DE CORRENTE AOS CÁTODOS DAS DESCARGAS DE GÁS
oaire.awardTitleESTUDO DA ESTABILIDADE DE TRANSFERÊNCIA DE CORRENTE AOS ELÉCTRODOS NAS DESCARGAS DE GÁS
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FFIS%2F68609%2F2006/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POSI/SFRH%2FBD%2F30598%2F2006/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/PIDDAC/SFRH%2FBD%2F35883%2F2007/PT
oaire.citation.issue2pt_PT
oaire.citation.startPage025019pt_PT
oaire.citation.titlePlasma Sources Science and Technologypt_PT
oaire.citation.volume19pt_PT
oaire.fundingStream3599-PPCDT
oaire.fundingStreamPOSI
oaire.fundingStreamPIDDAC
person.familyNameAlmeida
person.familyNameBenilov
person.givenNamePedro G C
person.givenNameMikhail
person.identifier.ciencia-idD61F-B90C-70B2
person.identifier.ciencia-id0F14-A79A-97C1
person.identifier.orcid0000-0002-8395-2693
person.identifier.orcid0000-0001-9059-1948
person.identifier.ridK-4443-2015
person.identifier.scopus-author-id8157100900
person.identifier.scopus-author-id7005138676
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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