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Effects of negative ions on discharge characteristics of water plasma source for a miniature microwave discharge ion thruster
http://hdl.handle.net/10131/00012359
http://hdl.handle.net/10131/00012359530c2da2-52f8-42a2-ac17-d299b08a89db
名前 / ファイル | ライセンス | アクション |
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2019.Nakamura,K.POP.26.043508.pdf (9.7 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2019-04-15 | |||||
タイトル | ||||||
タイトル | Effects of negative ions on discharge characteristics of water plasma source for a miniature microwave discharge ion thruster | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題 | Ion Thrusters, ECR.Plasma, Water, PIC–MCC | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Nakamura, Kengo
× Nakamura, Kengo× Koizumi, Hiroyuki× Nakano, Masakatsu× Takao, Yoshinori |
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著者所属 | ||||||
Department of Systems Integration, Yokohama National University, Yokohama 240-8501,Japan | ||||||
著者所属 | ||||||
Department of Advanced Energy, the University of Tokyo, Kashiwa, Chiba 277-8561, Japan | ||||||
著者所属 | ||||||
Department of Engineering, Tokyo Metropolitan College of Industrial Technology, 8-17-1,Minami-senjyu, Arakawa-ku, Tokyo 113-0852, Japan | ||||||
著者所属 | ||||||
Division of Systems Research, Yokohama National University, Yokohama 240-8501, Japan | ||||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | This work analyzes the discharge characteristics of water plasma for a miniature microwave discharge ion thruster via three-dimensional particle-in-cell simulations with Monte Carlo collisions. It incorporates the negative ions (H−, O−, and OH−) into the simulation code, aside from the three major positive ion species (H2O+, OH+, and H+), and investigates their effects on the discharge characteristics. On the one hand, the simulation results indicate that H2O+ is the dominant species and the negative ions have little effect on the positive ion density and transport. On the other hand, this study confirms the axial oscillation of the OH− negative ion density, in addition to azimuthal rotation, causing plasma instability with a periodic low-frequency anomalous diffusion. The azimuthal rotation is similar to the phenomena observed in other E × B devices, where the difference in spatial distributions of magnetized electrons and unmagnetized ions causes the local potential hump and the resultant instability. Moreover, the axial oscillation, not observed in the previous study considering only positive ions, is due to the generation of OH− by the charge transfer collision reaction between H2O and H−, and this oscillation frequency is double that of the azimuthal rotation. Both the azimuthal rotation and the axial oscillation result in the periodic double peaks of the potential time evolution. These fluctuations have an influence on electron transport across the magnetic field. | |||||
書誌情報 |
Physics of plasmas 巻 26, 号 4, p. 043508, 発行日 2019-04-12 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1070664X | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA10987555 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1063/1.5092754 | |||||
権利 | ||||||
権利情報 | ©2019 AIP Publishing. | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
出版者 | ||||||
出版者 | American Institute of Physics |