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3D modelling of heating of thermionic cathodes by high-pressure arc plasmas

2006Journal article Open access
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dc.contributor.authorBenilov, M. S.
dc.contributor.authorCarpaij, M.
dc.contributor.authorCunha, M. D.
dc.date.accessioned2022-11-21T14:33:55Z
dc.date.available2022-11-21T14:33:55Z
dc.date.issued2006
dc.description.abstractNumerical investigation of steady-state interaction of a high-pressure argon plasma with a cylindrical tungsten cathode is reported. A whole ‘zoo’ of very diverse modes of current transfer is revealed. Detailed results are given for the first five (three-dimensional) 3D spot modes, four of them branching off from the diffuse mode and one from the first axially symmetric spot mode. Divergences in the general pattern of solutions, which have been present in preceding works, are resolved. Hypotheses on stability of steady-state solutions, available in the literature, are analysed. It is found that these hypotheses provide an explanation of the fact that the transition between diffuse and spot modes is difficult to reproduce in the experiment but they do not explain the indication that it is the low-voltage branch of the first 3D spot mode that seems to occur in the experiment. Thus, the question of stability of steady-state solutions remains open: an accurate stability analysis, as well as additional experimental information is required.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBenilov, M. S., Carpaij, M., & Cunha, M. D. (2006). 3D modelling of heating of thermionic cathodes by high-pressure arc plasmas. Journal of Physics D: Applied Physics, 39(10), 2124-2134.pt_PT
dc.identifier.doi10.1088/0022-3727/39/10/024pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/4794
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherIOP Publishingpt_PT
dc.relationModes of current transfer to cathodes of high-pressure arc discharges and their stability
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectHeating of thermionic cathodespt_PT
dc.subjectHigh-pressure arc plasmaspt_PT
dc.subject3D modelingpt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências Exatas e da Engenhariapt_PT
dc.title3D modelling of heating of thermionic cathodes by high-pressure arc plasmaspt_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.endPage2134pt_PT
oaire.citation.issue10pt_PT
oaire.citation.startPage2124pt_PT
oaire.citation.titleJournal of Physics D: Applied Physicspt_PT
oaire.citation.volume39pt_PT
oaire.fundingStreamPOCI
person.familyNameBenilov
person.familyNameCunha
person.givenNameMikhail
person.givenNameMário
person.identifier.ciencia-id0F14-A79A-97C1
person.identifier.orcid0000-0001-9059-1948
person.identifier.orcid0000-0002-0397-536X
person.identifier.ridK-4443-2015
person.identifier.scopus-author-id7005138676
person.identifier.scopus-author-id7102711276
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication8509472b-5d78-47db-bfa0-51625a4e9218
relation.isAuthorOfPublication.latestForDiscovery8509472b-5d78-47db-bfa0-51625a4e9218
relation.isProjectOfPublication644330bd-ba62-4b15-a65a-d8b85244e455
relation.isProjectOfPublication.latestForDiscovery644330bd-ba62-4b15-a65a-d8b85244e455

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