2012 Fiscal Year Final Research Report
Elucidation of Plasma-Discharge Characteristics and Ion-BeamExtraction Mechanism for Micro RF Ion Propulsion
| Project/Area Number |
23760769
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Aerospace engineering
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| Research Institution | Kyoto University |
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Principal Investigator |
TAKAO Yoshinori 京都大学, 大学院・工学研究科, 助教 (80552661)
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| Project Period (FY) |
2011 – 2012
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| Keywords | プラズマ / 推進機 / 高周波 / マイクロ / 人工衛星 / モデリング / イオンエンジン |
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| Research Abstract |
We have conducted numerical and experimental research of micro RF ion thruster to investigate plasma-discharge characteristics and ion-beam extraction mechanism by using a numerical model, which consists of an external circuit model and a particle model, and by measuring the plasma density and the ion beam current. As a result, we have found that the op timum RF frequency range is 200-300 MHz to obtain high plasma density at low RF power, the effect of capacitive coupling is not negligible, and there is an optimum flow rate condition to extract ion beam. These results are in reasonable agreement with the numerical calculations.
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