Ion acceleration in the magnetic nozzle of an ECR thruster: comparison of experimental measurements with a quasi 1D kinetic model

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Show simple item record Correyero Plaza, Sara Jarrige, Julien Packan, Denis Ahedo Galilea, Eduardo Antonio 2018-12-13T13:01:07Z 2018-12-13T13:01:07Z 2018-05
dc.identifier.bibliographicCitation Space Propulsion Conference (SP 2018)
dc.description Proceeding of: Space Propulsion Conference, SP 2018,14-18 mayo, Sevilla
dc.description.abstract This paper presents experimental results on the magnetic nozzle of the 50 W Electron Cyclotron Resonance (ECR) thruster of ONERA, consisting of a 27 mm diameter ECR cavity and a fully divergent magnetic nozzle, created by a Neodymium permanent magnet. The diagnostics installed are a cylindrical Langmuir probe to measure plasma potential, plasma density and electron temperature, and a Laser Induced Fluorescence set-up to measure the mean ion kinetic energy. Both the ion velocity and plasma potential profiles seem to be independent of the mass flow rate when normalized with the electron temperature estimated at the sonic transition of the plasma flow. This sonic transition appears to be slightly shifted downwards of the thruster exit. Results are compared with a supersonic collisionless kinetic 1D model where electron dynamics account for magnetic mirror effects and potential barriers, while ions are treated as a fluid cold species.
dc.description.sponsorship This work was made in the framework of project MINOTOR that has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 730028. This work was additionally supported by the Spanish R D National Plan (Grant No. ESP2013-41052-P).
dc.format.extent 8
dc.format.mimetype application/pdf
dc.language.iso eng
dc.subject.other Magnetic nozzle
dc.subject.other Acceleration
dc.subject.other Laser induced Fluorescence
dc.subject.other Langmuir probe
dc.subject.other Kinetic modelling
dc.subject.other Ambipolar potential
dc.subject.other Magnetized expansion
dc.subject.other Electron
dc.title Ion acceleration in the magnetic nozzle of an ECR thruster: comparison of experimental measurements with a quasi 1D kinetic model
dc.type conferenceObject
dc.subject.eciencia Aeronáutica
dc.rights.accessRights openAccess
dc.relation.projectID info:eu-repo/grantAgreement/EC/H2020/730028
dc.relation.projectID Gobierno de España. ESP2013-41052-P
dc.type.version acceptedVersion
dc.relation.eventdate 2018-05-14
dc.relation.eventplace Sevilla
dc.relation.eventtitle Space Propulsion Conference (SP 2018)
dc.identifier.uxxi CC/0000028297
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