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Account of near-cathode sheath in numerical models of high-pressure arc discharges

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dc.contributor.authorBenilov, M. S.
dc.contributor.authorAlmeida, N. A.
dc.contributor.authorBaeva, M.
dc.contributor.authorCunha, M. D.
dc.contributor.authorBenilova, L. G.
dc.contributor.authorUhrlandt, D.
dc.date.accessioned2019-11-12T11:16:58Z
dc.date.available2019-11-12T11:16:58Z
dc.date.issued2016
dc.description.abstractThree approaches to describing the separation of charges in near-cathode regions of highpressure arc discharges are compared. The first approach employs a single set of equations, including the Poisson equation, in the whole interelectrode gap. The second approach employs a fully non-equilibrium description of the quasi-neutral bulk plasma, complemented with a newly developed description of the space-charge sheaths. The third, and the simplest, approach exploits the fact that significant power is deposited by the arc power supply into the near-cathode plasma layer, which allows one to simulate the plasma–cathode interaction to the first approximation independently of processes in the bulk plasma. It is found that results given by the different models are generally in good agreement, and in some cases the agreement is even surprisingly good. It follows that the predicted integral characteristics of the plasma–cathode interaction are not strongly affected by details of the model provided that the basic physics is right.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBenilov, M. S., Almeida, N. A., Baeva, M., Cunha, M. D., Benilova, L. G., & Uhrlandt, D. (2016). Account of near-cathode sheath in numerical models of high-pressure arc discharges. Journal of Physics D: Applied Physics, 49(21), 215201.pt_PT
dc.identifier.doi10.1088/0022-3727/49/21/215201pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/2599
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherIOP Publishingpt_PT
dc.relationPest-OE/UID/FIS/50010/2013pt_PT
dc.relationModelling, understanding, and controlling self-organization phenomena in plasma-electrode interaction in gas discharges: from first principles to applications
dc.subjectHigh-pressure arcspt_PT
dc.subjectNear-electrode phenomenapt_PT
dc.subjectArc-cathode interactionpt_PT
dc.subjectSpace-charge sheathspt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências Exatas e da Engenhariapt_PT
dc.titleAccount of near-cathode sheath in numerical models of high-pressure arc dischargespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleModelling, understanding, and controlling self-organization phenomena in plasma-electrode interaction in gas discharges: from first principles to applications
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FFIS-PLA%2F2708%2F2012/PT
oaire.citation.startPage215201pt_PT
oaire.citation.titleJournal of Physics D: Applied Physicspt_PT
oaire.citation.volume49(21)pt_PT
oaire.fundingStream3599-PPCDT
person.familyNameBenilov
person.familyNameAlmeida
person.familyNameCunha
person.givenNameMikhail
person.givenNameNelson
person.givenNameMário
person.identifier.ciencia-id0F14-A79A-97C1
person.identifier.ciencia-id0516-6FAA-27E2
person.identifier.orcid0000-0001-9059-1948
person.identifier.orcid0000-0002-6499-3609
person.identifier.orcid0000-0002-0397-536X
person.identifier.ridK-4443-2015
person.identifier.ridM-6228-2013
person.identifier.scopus-author-id7005138676
person.identifier.scopus-author-id7003469070
person.identifier.scopus-author-id7102711276
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication5ccf95a3-53d5-446c-857c-55d64b887175
relation.isAuthorOfPublication9a82798a-90e3-41c4-a9dd-7974813221a8
relation.isAuthorOfPublication8509472b-5d78-47db-bfa0-51625a4e9218
relation.isAuthorOfPublication.latestForDiscovery9a82798a-90e3-41c4-a9dd-7974813221a8
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