Global stability analysis of azimuthal oscillations in Hall thrusters

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Show simple item record Escobar Antón, Diego Ahedo Galilea, Eduardo Antonio 2019-11-07T13:33:01Z 2019-11-07T13:33:01Z 2014-11-20
dc.identifier.bibliographicCitation IEEE Transactions on Plasma Science (Special issue IEPC 2013), 43(1), Nov. 2014, Pp. 149-157
dc.identifier.isbn 0093-3813
dc.description Proceeding of: 33rd International Electric Propulsion Conference (IEPC 2013)
dc.description.abstract A linearized time-dependent 2-D (axial and azimuthal) fluid model of the Hall thruster discharge is presented. This model is used to carry out a global stability analysis of the plasma response, as opposed to the more common local stability analyses. Experimental results indicate the existence of low-frequency long-wave-length azimuthal oscillations in the direction of the E × B drift, usually referred to as spokes. The present model predicts the presence of such oscillations for typical Hall thruster conditions with a frequency and a growth rate similar to those found in experiments. Moreover, the comparison between the simulated spoke and the simulated breathing mode, a purely axial low-frequency oscillation typical in Hall thrusters, shows similar features in them. Additionally, the contribution of this azimuthal oscillation to electron conductivity is evaluated tentatively by computing the equivalent anomalous diffusion coefficient from the linear oscillations. The results show a possible contribution to anomalous diffusion in the rear part of the thruster.
dc.description.sponsorship This work was supported in part by Spain's Research and Development National Plan under Project AYA-2010-61699 and in part by the Air Force Office of Scientific Research, Air Force Material Command, U.S. Air Force, under Grant FA8655-13-1-3033.
dc.format.extent 9
dc.language.iso eng
dc.publisher IEEE
dc.rights © 2014 IEEE.
dc.subject.other Plasma propulsion
dc.subject.other Plasma simulation
dc.subject.other Plasma stability
dc.subject.other Plasma transport processes
dc.title Global stability analysis of azimuthal oscillations in Hall thrusters
dc.type article
dc.type conferenceObject
dc.subject.eciencia Aeronáutica
dc.subject.eciencia Física
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. AYA-2010-61699
dc.type.version acceptedVersion
dc.relation.eventdate 2013-10-06
dc.relation.eventplace Washington D.C., USA
dc.relation.eventtitle 33rd International Electric Propulsion Conference (IEPC 2013), 6-10 October 2013, Washington D.C., USA
dc.relation.eventtype proceeding
dc.identifier.publicationfirstpage 149
dc.identifier.publicationissue 1
dc.identifier.publicationlastpage 157
dc.identifier.publicationtitle IEEE Transactions on Plasma Science (Special issue IEPC 2013)
dc.identifier.publicationvolume 43
dc.identifier.uxxi CC/0000021863
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