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Title: The influence of magnetic field strength in ionization stage on ion transport between two stages of a double stage Hall thruster

Abstract

It is futile for a double stage Hall thruster to design a special ionization stage if the ionized ions cannot enter the acceleration stage. Based on this viewpoint, the ion transport under different magnetic field strengths in the ionization stage is investigated, and the physical mechanisms affecting the ion transport are analyzed in this paper. With a combined experimental and particle-in-cell simulation study, it is found that the ion transport between two stages is chiefly affected by the potential well, the potential barrier, and the potential drop at the bottom of potential well. With the increase of magnetic field strength in the ionization stage, there is larger plasma density caused by larger potential well. Furthermore, the potential barrier near the intermediate electrode declines first and then rises up while the potential drop at the bottom of potential well rises up first and then declines as the magnetic field strength increases in the ionization stage. Consequently, both the ion current entering the acceleration stage and the total ion current ejected from the thruster rise up first and then decline as the magnetic field strength increases in the ionization stage. Therefore, there is an optimal magnetic field strength in the ionization stagemore » to guide the ion transport between two stages.« less

Authors:
; ; ; ;  [1]
  1. Lab of Plasma Propulsion, Mail Box 458, Harbin Institute of Technology, Harbin 150001 (China)
Publication Date:
OSTI Identifier:
22068928
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 19; Journal Issue: 11; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ACCELERATION; CHARGED-PARTICLE TRANSPORT; ELECTRODES; IONIZATION; IONS; MAGNETIC FIELDS; PLASMA DENSITY; PLASMA SIMULATION; POTENTIALS; THRUSTERS

Citation Formats

Yu Daren, Song Maojiang, Li Hong, Liu Hui, and Han Ke. The influence of magnetic field strength in ionization stage on ion transport between two stages of a double stage Hall thruster. United States: N. p., 2012. Web. doi:10.1063/1.4767648.
Yu Daren, Song Maojiang, Li Hong, Liu Hui, & Han Ke. The influence of magnetic field strength in ionization stage on ion transport between two stages of a double stage Hall thruster. United States. doi:10.1063/1.4767648.
Yu Daren, Song Maojiang, Li Hong, Liu Hui, and Han Ke. Thu . "The influence of magnetic field strength in ionization stage on ion transport between two stages of a double stage Hall thruster". United States. doi:10.1063/1.4767648.
@article{osti_22068928,
title = {The influence of magnetic field strength in ionization stage on ion transport between two stages of a double stage Hall thruster},
author = {Yu Daren and Song Maojiang and Li Hong and Liu Hui and Han Ke},
abstractNote = {It is futile for a double stage Hall thruster to design a special ionization stage if the ionized ions cannot enter the acceleration stage. Based on this viewpoint, the ion transport under different magnetic field strengths in the ionization stage is investigated, and the physical mechanisms affecting the ion transport are analyzed in this paper. With a combined experimental and particle-in-cell simulation study, it is found that the ion transport between two stages is chiefly affected by the potential well, the potential barrier, and the potential drop at the bottom of potential well. With the increase of magnetic field strength in the ionization stage, there is larger plasma density caused by larger potential well. Furthermore, the potential barrier near the intermediate electrode declines first and then rises up while the potential drop at the bottom of potential well rises up first and then declines as the magnetic field strength increases in the ionization stage. Consequently, both the ion current entering the acceleration stage and the total ion current ejected from the thruster rise up first and then decline as the magnetic field strength increases in the ionization stage. Therefore, there is an optimal magnetic field strength in the ionization stage to guide the ion transport between two stages.},
doi = {10.1063/1.4767648},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 11,
volume = 19,
place = {United States},
year = {2012},
month = {11}
}