Model of radial plasma-wall interactions in a Hall thruster

E. Ahedo, F. I. Parra

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Recent achievements on a sheath/presheath/sheath model of the radial interaction of the plasma discharge with the dielectric walls of a Hall thruster are presented. Trapping and thermalization of the secondary electron emission (SEE) depend on the plasma collisionality. The main new contribution is the sheath structure for partial and zero trapping of the SEE. The SEE yield necessary for charge saturation of the sheath increases as collisionality decreases, and the charge-saturation limit is beyond reach for low collisionality and real materials. Other contributions are the analysis of the ion temperature and of asymmetric profiles in non-planar channel geometries.

Original languageEnglish (US)
Title of host publication38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Print)9781624101151
DOIs
StatePublished - 2002
Externally publishedYes
Event38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2002 - Indianapolis, IN, United States
Duration: Jul 7 2002Jul 10 2002

Publication series

Name38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit

Other

Other38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2002
Country/TerritoryUnited States
CityIndianapolis, IN
Period7/7/027/10/02

ASJC Scopus subject areas

  • Aerospace Engineering
  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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