Two-Dimensional Electron Model for a Hybrid Code of a Two-Stage Hall Thruster

Escobar, Diego and Ahedo Galilea, Eduardo (2008). Two-Dimensional Electron Model for a Hybrid Code of a Two-Stage Hall Thruster. "IEEE Transactions on Plasma Science", v. 36 (n. 5); pp. 2043-2057. ISSN 0093-3813. https://doi.org/10.1109/TPS.2008.2004227.

Description

Title: Two-Dimensional Electron Model for a Hybrid Code of a Two-Stage Hall Thruster
Author/s:
  • Escobar, Diego
  • Ahedo Galilea, Eduardo
Item Type: Article
Título de Revista/Publicación: IEEE Transactions on Plasma Science
Date: 2008
ISSN: 0093-3813
Volume: 36
Subjects:
Freetext Keywords: 2D model axisymmetric model chamber wall collection mode collisionless dynamics current-driving electrode drift-fluid equations electric current exchange emission mode equilibrium law floating mode heavy species hybrid code magnetic topology magnetized electrons parabolic differential equation particle-in-cell model perpendicular transport plasma propulsion plume divergence sheath model thrust efficiency two-dimensional electron model two-stage Hall thruster simulation wall los
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Fundamentos Matemáticos de la Tecnología Aeronáutica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

An axisymmetric model for magnetized electrons in a Hall thruster, to be used in combination with a particle-in-cell model for heavy species, is presented. The main innovation is the admission of exchanges of electric current at the chamber walls, thus making the model applicable to a larger variety of Hall thrusters. The model is fully 2-D for regular magnetic topologies. It combines an equilibrium law for collisionless dynamics along the direction parallel to the magnetic field with drift-fluid equations for perpendicular transport. These are coupled to sheath models for the interaction with different types of walls. The derivation of a parabolic differential equation for the temperature and the full computation of the electric field work improves clarity and accuracy over previous models. Simulations of a Hall thruster with an intermediate current-driving electrode, operating in emission, floating, and collection modes are presented. Enhancement of thrust efficiency is found for the electrode working in the high-emission mode if the magnetic field strength is adjusted appropriately. The two-stage floating mode presents lower wall losses, lower plume divergence, and higher efficiency than the equivalent one-stage configuration.

More information

Item ID: 1965
DC Identifier: http://oa.upm.es/1965/
OAI Identifier: oai:oa.upm.es:1965
DOI: 10.1109/TPS.2008.2004227
Official URL: http://ieeexplore.ieee.org/xpls/abs_all.jsp?isnumber=4674691&arnumber=4675218&count=29&index=10&tag=1
Deposited by: Memoria Investigacion
Deposited on: 02 Dec 2009 12:01
Last Modified: 20 Apr 2016 11:46
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