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Simulation of thermal instability in non-uniformities on the surface of cathodes of vacuum arcs

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dc.contributor.authorCunha, M. D.
dc.contributor.authorBenilov, M. S.
dc.contributor.authorHartmann, W.
dc.contributor.authorWenzel, N.
dc.date.accessioned2022-09-02T14:56:54Z
dc.date.available2022-09-02T14:56:54Z
dc.date.issued2016
dc.description.abstractInstability stemming from the strong dependence of electron emission current on the local surface temperature plays an important role in current transfer to hot cathodes of arc discharges. In the case of vacuum arcs, this instability may lead to micro explosions on cathode surface even if the surface is planar. This work is concerned with numerical simulation of effect produced by surface non-uniformities. It is found that the effect is non-trivial: the presence of surface non-uniformities can not only accelerate the development of the instability, which is what one would expect intuitively, but also slow it down and even suppress.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationCunha, M. D., Benilov, M. S., Hartmann, W., & Wenzel, N. (2016, September). Simulation of thermal instability in non-uniformities on the surface of cathodes of vacuum arcs. In 2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) (Vol. 1, pp. 1-4). IEEE.pt_PT
dc.identifier.doi10.1109/DEIV.2016.7748732pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/4557
dc.language.isoengpt_PT
dc.publisherIEEEpt_PT
dc.relationInstitute for Plasmas and Nuclear Fusion
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectVacuum arcspt_PT
dc.subjectCathodespt_PT
dc.subjectThermal instabilitypt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências Exatas e da Engenhariapt_PT
dc.titleSimulation of thermal instability in non-uniformities on the surface of cathodes of vacuum arcspt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.awardTitleInstitute for Plasmas and Nuclear Fusion
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FFIS%2F50010%2F2013/PT
oaire.citation.endPage4pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.title2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)pt_PT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameCunha
person.familyNameBenilov
person.givenNameMário
person.givenNameMikhail
person.identifier.ciencia-id0F14-A79A-97C1
person.identifier.orcid0000-0002-0397-536X
person.identifier.orcid0000-0001-9059-1948
person.identifier.ridK-4443-2015
person.identifier.scopus-author-id7102711276
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.typeconferenceObjectpt_PT
relation.isAuthorOfPublication8509472b-5d78-47db-bfa0-51625a4e9218
relation.isAuthorOfPublication5ccf95a3-53d5-446c-857c-55d64b887175
relation.isAuthorOfPublication.latestForDiscovery8509472b-5d78-47db-bfa0-51625a4e9218
relation.isProjectOfPublication773f8550-0778-4bd3-b859-600f4fca9629
relation.isProjectOfPublication.latestForDiscovery773f8550-0778-4bd3-b859-600f4fca9629

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