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Space-charge sheath with ions accelerated into the plasma

2010Journal article Open access
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dc.contributor.authorBenilov, M. S.
dc.date.accessioned2022-08-31T13:57:38Z
dc.date.available2022-08-31T13:57:38Z
dc.date.issued2010
dc.description.abstractThe conventional model of near-cathode space-charge sheath with ions entering the sheath from the quasi-neutral plasma may not be applicable to discharges burning in cathode vapour, e.g. vacuum arcs, where ionization of emitted atoms may occur inside the sheath with some of the produced ions returning to the cathode and others moving into the plasma. In this connection, a simple model is considered of a sheath formed by electrons and positive ions injected into the sheath with a very low velocity and moving from the sheath into the plasma. It is shown that such a sheath is possible provided that the sheath voltage is equal to or exceeds approximately 1.256kTe/e. This limitation is due to the space charge in the sheath and is in this sense analogous to the limitation of ion current in a vacuum diode expressed by the Child–Langmuir law. The ions leave the sheath and enter the plasma with a velocity equal to or exceeding approximately 1.585uB.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBenilov, M. S. (2010). Space-charge sheath with ions accelerated into the plasma. Journal of Physics D: Applied Physics, 43(17), 175203. DOI: 10.1088/0022-3727/43/17/175203pt_PT
dc.identifier.doi10.1088/0022-3727/43/17/175203pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/4536
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherIOP Publishingpt_PT
dc.relationCathode spots in high-pressure DC gas discharges: self-organization phenomena
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectSpace-charge sheathpt_PT
dc.subjectIonspt_PT
dc.subjectPlasmapt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências Extas e da Engenhariapt_PT
dc.titleSpace-charge sheath with ions accelerated into the plasmapt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCathode spots in high-pressure DC gas discharges: self-organization phenomena
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FFIS%2F68609%2F2006/PT
oaire.citation.issue17pt_PT
oaire.citation.startPage175203pt_PT
oaire.citation.titleJournal of Physics D: Applied Physicspt_PT
oaire.citation.volume43pt_PT
oaire.fundingStream3599-PPCDT
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.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication5ccf95a3-53d5-446c-857c-55d64b887175
relation.isAuthorOfPublication.latestForDiscovery5ccf95a3-53d5-446c-857c-55d64b887175
relation.isProjectOfPublication0c0f344b-25a8-4e62-b2ee-bdc0e632c6a5
relation.isProjectOfPublication.latestForDiscovery0c0f344b-25a8-4e62-b2ee-bdc0e632c6a5

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