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Stability of stationary solutions in the theory of cathode spots in arcs in vacuum and ambient gas

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dc.contributor.authorBenilov, M. S.
dc.contributor.authorCunha, M. D.
dc.contributor.authorHartmann, W.
dc.contributor.authorWenzel, N.
dc.date.accessioned2022-09-02T10:34:28Z
dc.date.available2022-09-02T10:34:28Z
dc.date.issued2014
dc.description.abstractStability of stationary spots on cathodes of arcs in vacuum and ambient gas has been investigated by means of simulation of development in time of perturbations imposed over steady-state solutions. Two cases of loading conditions have been considered, namely, spots operating at fixed current (the case typical of small-scale experiments) and spots operating at fixed voltage (the case typical of high-power circuit breakers). Results are reported on spots on large copper cathodes of vacuum arcs and on spots on tungsten cathodes of high-pressure argon arcs. It is shown, in particular, that if the ballast resistance in a small-scale laboratory experiment with a high-current arc is insufficient, potential consequence may be a thermal explosion of a spot, if the arc burns in vacuum, and massive melting of the cathode surface, if the arc burns in ambient gas. This conclusion conforms to trends observed in the experiment.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBenilov, M. S., Cunha, M. D., Hartmann, W., & Wenzel, N. (2014). Stability of stationary solutions in the theory of cathode spots in arcs in vacuum and ambient gas. In 2014 International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) (pp. 197-200). IEEE. DOI: 10.1109/DEIV.2014.6961653pt_PT
dc.identifier.doi10.1109/DEIV.2014.6961653pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/4551
dc.language.isoengpt_PT
dc.publisherIEEEpt_PT
dc.relationModelling, understanding, and controlling self-organization phenomena in plasma-electrode interaction in gas discharges: from first principles to applications
dc.relation2014 - Strategic Project
dc.relation.publisherversionhttps://ieeexplore.ieee.org/abstract/document/6961653pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectCathode spotspt_PT
dc.subjectArcs in vacuumpt_PT
dc.subjectAmbient gaspt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências Exatas e da Engenhariapt_PT
dc.titleStability of stationary solutions in the theory of cathode spots in arcs in vacuum and ambient gaspt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.awardTitleModelling, understanding, and controlling self-organization phenomena in plasma-electrode interaction in gas discharges: from first principles to applications
oaire.awardTitle2014 - Strategic Project
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FFIS-PLA%2F2708%2F2012/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/PEst-OE%2FMAT%2FUI0219%2F2014/PT
oaire.citation.endPage200pt_PT
oaire.citation.startPage197pt_PT
oaire.citation.title2014 International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)pt_PT
oaire.citation.volume.pt_PT
oaire.fundingStream3599-PPCDT
oaire.fundingStream6817 - DCRRNI ID
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.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
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