ion source, microwave, ion engine, electron temperature, Langmuir probe, microwave discharge, microwave ion source, electron cyclotron resonance, plasma probe, electron energy distribution function, probe measurement
University of Tokyo
Kyushu University
Japan Aerospace Exploration Agency Institute of Space and Astronautical Science
Japan Aerospace Exploration Agency Institute of Space and Astronautical Science
出版者
宇宙航空研究開発機構
出版者（英）
Japan Aerospace Exploration Agency (JAXA)
雑誌名
宇宙航空研究開発機構特別資料: 2005年度宇宙関連プラズマ研究会講演集
雑誌名(英)
JAXA Special Publication: Proceedings of Space Plasma Symposium 2005
Along with the development of microwave discharge ion engines, it is necessary that a analysis model of the ion sources is developed. As the first stage, probe measurements of the ion source of micro 20, which is under the development now, were done. In the discharge chamber of micro 20, it is expected that a certain circumferential distribution is exist because of the magnetic field and the gas ports in the discharge chamber. In this research, we got the distribution between inside magnet rows, which indicated an increase in electron temperatures and a decrease in plasma densities along the direction of the Delta B drift of electrons. Moreover, it is found that electron temperatures and plasma densities change in two different cases of the locations of the gas ports. These results show that the best shape of the discharge chamber can improve the performance improvement of micro 20.
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