Nonlinear ion dynamics in Hall thruster plasma source by ion transit-time instability

Youbong Lim, Wonho Choe, Stéphane Mazouffre, Jae Sun Park, Holak Kim, Jongho Seon, L. Garrigues

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

High-energy tail formation in an ion energy distribution function (IEDF) is explained in a Hall thruster plasma with the stationary crossed electric and magnetic fields whose discharge current is oscillated at the ion transit-time scale with a frequency of 360 kHz. Among ions in different charge states, singly charged Xe ions (Xe+) have an IEDF that is significantly broadened and shifted toward the high-energy side, which contributes to tail formation in the entire IEDF. Analytical and numerical investigations confirm that the IEDF tail is due to nonlinear ion dynamics in the ion transit-time oscillation.

Original languageEnglish
Article number03LT01
JournalPlasma Sources Science and Technology
Volume26
Issue number3
DOIs
StatePublished - Feb 14 2017
Externally publishedYes

Funding

This work was partly supported by the Space Core Technology Program (Grant No. 2014M1A3A3A02034510) ?and National R&D program (Grant No. 2014M1A7A1A03045092) through the National Research Foundation of Korea funded by Ministry of Science, ICT

FundersFunder number
National R&D program2014M1A7A1A03045092
Ministry of Science, ICT and Future Planning
National Research Foundation of Korea

    Keywords

    • Hall thruster
    • IEDF
    • crossed-field discharge
    • high-energy tail
    • ion transit-time instability
    • nonlinear ion dynamics

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