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Analyzing spotless mode of current transfer to cathodes of metal-vapor arcs

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dc.contributor.authorBenilov, M. S.
dc.contributor.authorBenilova, L. G.
dc.date.accessioned2022-09-02T10:51:54Z
dc.date.available2022-09-02T10:51:54Z
dc.date.issued2014
dc.description.abstractThe diffuse, or spotless, mode of current transfer has been observed on cathodes of vacuum arcs under conditions where the average cathode temperature was high enough, about 2000 K. It has been known for many years that none of the known mechanisms of current transfer to cathodes of vacuum arcs and, in particular, of the electron emission is capable of producing the current densities of the order of 105 - 106 Am-2 deduced from the experiment. A fresh attempt to clarify this question is made in this work. Cathodes made of chromium are considered, on which the most of the experiments have been performed. It is shown that an account of the difference between values of thermionic and photoelectric work functions given in the reference literature allows one to significantly reduce the deviation between the theory and the experiment. Unfortunately, data on thermionic work function available in the literature refer to the cathode surface temperatures below 1400 K, which is significantly smaller than measured temperatures of the chromium cathodes of vacuum arcs operating in the spotless mode. Therefore, further experimental data are needed in order to clarify this effect.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBenilov, M. S., & Benilova, L. G. (2014, September). Analyzing spotless mode of current transfer to cathodes of metal-vapor arcs. In 2014 International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) (pp. 241-244). IEEE.pt_PT
dc.identifier.doi10.1109/DEIV.2014.6961664pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/4552
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/6961664pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectCathodes of vacuum arcspt_PT
dc.subjectCurrent transferpt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências Extas e da Engenhariapt_PT
dc.titleAnalyzing spotless mode of current transfer to cathodes of metal-vapor arcspt_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.endPage244pt_PT
oaire.citation.startPage241pt_PT
oaire.citation.title2014 International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)pt_PT
oaire.fundingStream3599-PPCDT
oaire.fundingStream6817 - DCRRNI ID
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.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
relation.isAuthorOfPublication5ccf95a3-53d5-446c-857c-55d64b887175
relation.isAuthorOfPublication.latestForDiscovery5ccf95a3-53d5-446c-857c-55d64b887175
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