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

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.
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Submitted on : Wednesday, October 23, 2019 - 3:30:11 PM
Last modification on : Wednesday, November 3, 2021 - 9:29:37 AM
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Youbong Lim, Wonho Choe, Stéphane Mazouffre, Jae Sun Park, Holak Kim, et al.. Nonlinear ion dynamics in Hall thruster plasma source by ion transit-time instability. Plasma Sources Science and Technology, IOP Publishing, 2017, 26 (3), pp.03LT01. ⟨10.1088/1361-6595/aa58d9⟩. ⟨hal-02326832⟩

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