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Field to thermo-field to thermionic electron emission: a practical guide to evaluation and electron emission from arc cathodes

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dc.contributor.authorBenilov, M. S.
dc.contributor.authorBenilova, L. G.
dc.date.accessioned2022-09-02T09:24:06Z
dc.date.available2022-09-02T09:24:06Z
dc.date.issued2013
dc.description.abstractThis work is concerned with devising a method of evaluation of electron emission in the framework of the Murphy-Good theory, which would be as simple and computationally efficient as possible while being accurate in the full range of conditions of validity of the theory. The method relies on Pad e approximants. A comparative study of electron emission from cathodes of arcs in ambient gas and vacuum arcs is performed with the use of this method. Electron emission from cathodes of arcs in ambient gas is of thermionic nature even for extremely high gas pressures characteristic of projection and automotive arc lamps and is adequately described by the Richardson-Schottky formula. The electron emission from vaporizing (hot) cathodes of vacuum arcs is of thermo-field nature and is adequately described by the Hantzsche fit formula. Since no analytical formulas are uniformly valid for field to thermo-field to thermionic emission, a numerical evaluation of the Murphy-Good formalism is inevitable in cases where a unified description of the full range of conditions is needed, as is the general case of plasma-cathode interaction in vacuum arcs, and the technique proposed in this work may be the method of choice to this end.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBenilov, M. S., & Benilova, L. G. (2013). Field to thermo-field to thermionic electron emission: a practical guide to evaluation and electron emission from arc cathodes. Journal of Applied Physics, 114(6), 063307.pt_PT
dc.identifier.doi10.1063/1.4818325pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/4549
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherAmerican Institute of Physicspt_PT
dc.relationModelling, understanding, and controlling self-organization phenomena in plasma-electrode interaction in gas discharges: from first principles to applications
dc.relationStrategic Project - UI 219 - 2011-2012
dc.relation.publisherversionhttps://aip.scitation.org/doi/full/10.1063/1.4818325pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectElectron emission from arc cathodespt_PT
dc.subjectThermionic electron emissionpt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências Extas e da Engenhariapt_PT
dc.titleField to thermo-field to thermionic electron emission: a practical guide to evaluation and electron emission from arc cathodespt_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.awardTitleStrategic Project - UI 219 - 2011-2012
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%2F2011/PT
oaire.citation.issue6pt_PT
oaire.citation.startPage063307pt_PT
oaire.citation.titleJournal of Applied Physicspt_PT
oaire.citation.volume114pt_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.typearticlept_PT
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relation.isAuthorOfPublication.latestForDiscovery5ccf95a3-53d5-446c-857c-55d64b887175
relation.isProjectOfPublicationac2557f2-e637-477a-8a14-7b1f23978256
relation.isProjectOfPublication19d096f2-b171-41fd-822f-f2fa541dabc1
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