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Macroscopic plasma analysis from 1D-radial kinetic results of a Hall thruster discharge

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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.authorMarín-Cebrián, Alberto
dc.contributor.authorDomínguez Vázquez, Adrián
dc.contributor.authorFajardo Peña, Pablo
dc.contributor.authorAhedo Galilea, Eduardo Antonio
dc.contributor.funderComunidad de Madrides
dc.contributor.funderMinisterio de Ciencia, Innovación y Universidades (España)es
dc.date.accessioned2021-11-30T09:32:04Z
dc.date.available2022-11-01T00:00:07Z
dc.date.issued2021-11
dc.description.abstractA radial particle-in-cell model of the weakly-collisional plasma discharge in a Hall thruster, provides the non-Maxwellian velocity distribution functions (VDF) of ions and electrons. The model considers a radial magnetic field, secondary electron emission from the two walls, and phenomenological models of anomalous electron scattering. The electron VDF is used to assess the different terms in the macroscopic momentum and energy equations, identifying those differing from the standard fluid model for a near-Maxwellian VDF. The pressure tensor consists of an anisotropic gyrotropic part and a small gyroviscous part. Nonetheless, the gradient of this last one affects the cross-field electron current density, generating radial undulations that resemble those reported for near-wall conductivity. A gyroviscous energy flux is identified too. The heat flux parallel to the magnetic lines does not follow a conductive-type law but a convective-type one, already found in other weakly-collisional plasmas. The tails of the electron velocity distribution function are partially depleted due to wall collection, leading to reduced electron fluxes of particles and energy, which are characterized with parameters useful for fluid models. Differences in the plasma response for annular and planar channel geometries are highlighted. The levels of replenishment of the electron VDF and of the asymmetries in radial profiles differ for isotropic and anisotropic anomalous scattering models.en
dc.format.extent15
dc.identifier.bibliographicCitationMarín-Cebrián, A., Domínguez-Vázquez, A., Fajardo, P. & Ahedo, E. (2021). Macroscopic plasma analysis from 1D-radial kinetic results of a Hall thruster discharge. Plasma Sources Science and Technology, 30(11), 115011.en
dc.identifier.doihttps://doi.org/10.1088/1361-6595/ac325e
dc.identifier.issn0963-0252
dc.identifier.publicationfirstpage115011
dc.identifier.publicationissue11
dc.identifier.publicationtitlePlasma Sources Science and Technologyen
dc.identifier.publicationvolume30
dc.identifier.urihttps://hdl.handle.net/10016/33712
dc.identifier.uxxiAR/0000028752
dc.language.isoeng
dc.publisherIOP Publishingen
dc.relation.projectIDComunidad de Madrid. Y2018/NMT-4750es
dc.relation.projectIDGobierno de España. PID2019-108034RB-I00es
dc.rights© 2021 IOP Publishing Ltd.en
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subject.ecienciaBiología y Biomedicinaes
dc.subject.otherHall thrusteren
dc.subject.otherGyroviscosityen
dc.subject.otherHeat fluxen
dc.subject.otherNear-wall conductivityen
dc.subject.otherNon-maxwellian electron VDFen
dc.subject.otherParticle-in-cellen
dc.titleMacroscopic plasma analysis from 1D-radial kinetic results of a Hall thruster dischargeen
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
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