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 language | English |
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Article number | 03LT01 |
Journal | Plasma Sources Science and Technology |
Volume | 26 |
Issue number | 3 |
DOIs | |
State | Published - Feb 14 2017 |
Externally published | Yes |
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
Funders | Funder number |
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National R&D program | 2014M1A7A1A03045092 |
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