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Current-Voltage and floating-potential characteristics of cylindrical emissive probes from a full-kinetic model based on the orbital motion theory

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dc.affiliation.dptoUC3M. Departamento de Ingeniería Aeroespaciales
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Equipo de Propulsión Espacial y Plasmas (EP2)es
dc.contributor.authorChen, Xin
dc.contributor.authorSánchez Arriaga, Gonzalo
dc.contributor.funderMinisterio de Economía y Competitividad (España)es
dc.date.accessioned2019-06-18T09:42:07Z
dc.date.available2019-06-18T09:42:07Z
dc.date.issued2017-09
dc.description12th International Workshop on Electric Probes in Magnetized Plasmas (IWEP 2017)en
dc.description.abstractTo model the sheath structure around an emissive probe with cylindrical geometry, the Orbital-Motion theory takes advantage of three conserved quantities (distribution function, transverse energy, and angular momentum) to transform the stationary Vlasov-Poisson system into a single integro-differential equation. For a stationary collisionless unmagnetized plasma, this equation describes self-consistently the probe characteristics. By solving such an equation numerically, parametric analyses for the current-voltage (IV) and floating-potential (FP) characteristics can be performed, which show that: (a) for strong emission, the space-charge effects increase with probe radius; (b) the probe can float at a positive potential relative to the plasma; (c) a smaller probe radius is preferred for the FP method to determine the plasma potential; (d) the work function of the emitting material and the plasma-ion properties do not influence the reliability of the floating-potential method. Analytical analysis demonstrates that the inflection point of an IV curve for non-emitting probes occurs at the plasma potential. The flat potential is not a self-consistent solution for emissive probes.en
dc.description.sponsorshipThis work was supported by the Ministerio de Economía y Competitividad of Spain (Grant No ESP-2016-75887). Work by G. Snchez-Arriaga was supported by the Ministerio de Economía y Competitividad of Spain (Grant No RYC-2014-15357).en
dc.format.extent11
dc.identifier.bibliographicCitationJournal of Physics: Conference Series, 958(1).en
dc.identifier.isbn1742-6588
dc.identifier.publicationfirstpage1
dc.identifier.publicationissue1
dc.identifier.publicationlastpage11
dc.identifier.publicationtitle12th International Workshop on Electric Probes in Magnetized Plasmas 2017 (IWEP 2017)en
dc.identifier.publicationvolume958 (012001)
dc.identifier.urihttps://hdl.handle.net/10016/28506
dc.identifier.uxxiCC/0000027663
dc.language.isoengen
dc.publisherIOP Publishingen
dc.relation.eventdate04–07 September 2017
dc.relation.eventplaceNaklo,Esloveniaes
dc.relation.eventtitle12th International Workshop on Electric Probes in Magnetized Plasmas (IWEP 2017)en
dc.relation.ispartofseriesJournal of Physics: Conference Seriesen
dc.relation.ispartofseriesConference 1en
dc.relation.projectIDGobierno de España. ESP-2016-75887es
dc.relation.projectIDGobierno de España. RYC-2014-15357es
dc.rights© 2018 IOP Publishing Ltd.en
dc.rightsAtribución 3.0 España*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/*
dc.subject.ecienciaAeronáuticaes
dc.titleCurrent-Voltage and floating-potential characteristics of cylindrical emissive probes from a full-kinetic model based on the orbital motion theoryen
dc.typeconference paper*
dc.type.hasVersionVoR*
dspace.entity.typePublication
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