Effect of the initial VDFs in magnetic nozzle expansions

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dc.contributor.author Correyero Plaza, Sara
dc.contributor.author Merino Martínez, Mario
dc.contributor.author Ahedo Galilea, Eduardo Antonio
dc.date.accessioned 2020-09-25T09:15:13Z
dc.date.available 2020-09-25T09:15:13Z
dc.date.issued 2019-09-15
dc.identifier.bibliographicCitation 36th International Electric Propulsion Conference (IEPC), september, 15-20, 2019, Vienna, 14 p.
dc.identifier.uri http://hdl.handle.net/10016/30851
dc.description.abstract This work presents a kinetic study of the plasma response in a fully magnetized plasma expansion. A paraxial, collisionless, steady-state plasma model is used to analyze the effect of expanding in a convergent-divergent nozzle a plasma with different types of VDF at the plasma reservoir. The first part of the paper studies the kinetic features, such as magnetic mirroring and anisotropy for both ions and electrons. The collective effects are analyzed by evaluating the momentum and energy equations based on the kinetic solution. The study of the collisionless heat fluxes allows estimating a simple closure to the fluid equation hierarchy for the electrons. The second part of the paper analyzes the solution with two species of electrons with disparate temperatures at the upstream source. A quasineutral steepened profile is formed, which impacts the plasma properties along the expansion. The collisionless electron cooling, as well as the anisotropy on the divergent side of the nozzle are analyzed by separating the different subpopulations of electrons (free, reflected, or doubly-trapped), of both the thermal and the suprathermal species.
dc.description.sponsorship The work has been supported by Project ESP2016-75887 (Spain’s National Research and Development Plan - MINECO/FEDER), and by the European Union Horizon 2020 project MINOTOR, that has received funding from the research and innovation program under grant agreement No 730028.
dc.language.iso eng
dc.rights Atribución-NoComercial-SinDerivadas 3.0 España
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.title Effect of the initial VDFs in magnetic nozzle expansions
dc.type conferenceObject
dc.relation.publisherversion http://electricrocket.org/2019/818.pdf
dc.subject.eciencia Aeronáutica
dc.rights.accessRights openAccess
dc.relation.projectID info:eu-repo/grantAgreement/EC/730028
dc.relation.projectID Gobierno de España. ESP2016-75887-P
dc.type.version publishedVersion
dc.relation.eventdate 2019-09-15
dc.relation.eventplace Austria
dc.relation.eventtitle 36th International Electric Propulsion Conference (IEPC), Vienna, Austria, September 15-20, 2019
dc.identifier.uxxi CC/0000030955
dc.contributor.funder European Commission
dc.contributor.funder Ministerio de Economía y Competitividad (España)
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