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Bifurcations of current transfer through a collisional sheath with ionization and self-organization on glow cathodes

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dc.contributor.authorBenilov, M. S.
dc.date.accessioned2022-08-31T08:59:41Z
dc.date.available2022-08-31T08:59:41Z
dc.date.issued2008
dc.description.abstractA bifurcation analysis is performed of a dc glow discharge between parallel electrodes and of a dc near cathode space-charge sheath bordering a uniform plasma column. A model of plasma is considered with a single ion species and motion of the charged particles dominated by drift. Bifurcation points are found at which steady-state modes with spots on the cathode branch off from the abnormal mode or from the mode corre sponding to the falling section of the current-density–voltage characteristic. In both discharge configurations, bifurcations in the abnormal mode have been detected; an unexpected result given that loss of stability and pattern appearance in dc gas discharges are usually associated with a negative differential resistance of the discharge. The conclusion is drawn that the two most important mechanisms governing appearance of patterns on glow cathodes, which are electrostatic mechanism and diffusion, produce competing effects: the former favors appearance of modes with multiple spots, while the latter favors appearance of a mode with one spot. This may explain the appearance in experiments of a normal spot or, alternatively, of patterns with multiple spots.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBenilov, M. S. (2008). Bifurcations of current transfer through a collisional sheath with ionization and self-organization on glow cathodes. Physical Review E, 77(3), 036408.DOI: 10.1103/PhysRevE.77.036408pt_PT
dc.identifier.doi10.1103/PhysRevE.77.036408pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/4529
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherAmerican Physical Societypt_PT
dc.relationModes of current transfer to cathodes of high-pressure arc discharges and their stability
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectBifurcations of current transferpt_PT
dc.subjectGlow cathodespt_PT
dc.subjectCollisional sheathpt_PT
dc.subjectIonizationpt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências Exatas e da Engenhariapt_PT
dc.titleBifurcations of current transfer through a collisional sheath with ionization and self-organization on glow cathodespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleModes of current transfer to cathodes of high-pressure arc discharges and their stability
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POCI/POCI%2FFIS%2F60526%2F2004/PT
oaire.citation.issue3pt_PT
oaire.citation.titlePhysical review E: Statistical, nonlinear, and soft matter physicspt_PT
oaire.citation.volume77pt_PT
oaire.fundingStreamPOCI
person.familyNameBenilov
person.givenNameMikhail
person.identifier.ciencia-id0F14-A79A-97C1
person.identifier.orcid0000-0001-9059-1948
person.identifier.ridK-4443-2015
person.identifier.scopus-author-id7005138676
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication5ccf95a3-53d5-446c-857c-55d64b887175
relation.isAuthorOfPublication.latestForDiscovery5ccf95a3-53d5-446c-857c-55d64b887175
relation.isProjectOfPublication644330bd-ba62-4b15-a65a-d8b85244e455
relation.isProjectOfPublication.latestForDiscovery644330bd-ba62-4b15-a65a-d8b85244e455

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