2009 Fiscal Year Final Research Report
Plasma Source Development for an advanced electrodeless electric propulsion
| Project/Area Number |
20740317
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Plasma science
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| Research Institution | Iwate University |
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Principal Investigator |
TAKAHASHI Kazunori Iwate University, 工学部, 助教 (80451491)
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| Project Period (FY) |
2008 – 2009
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| Keywords | イオン加速 / ダブルレイヤー / 永久磁石 / 高周波プラズマ / 発散磁場 / プラズマ電位構造 |
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| Research Abstract |
Ion energy distribution function, plasma density, and plasma-potential structure are experimentally investigated in a magnetically expanding plasma source using permanent magnets, connected to a large-diameter, 76-cm-diameter and 100-cm-long vacuum chamber. In the machine, a rapid potential drop due to a formation of an electric double layer spontaneously forms and a resulting supersonic ion beam accelerated by the double layer are detected in the downstream diffusion chamber. As a result of a comparison with the previously performed experiments in the small diffusion chamber, the observed electrodeless and electrostatic ion acceleration is found not to be affected by a boundary condition in the diffusion chamber region. The results demonstrate that the source would be applicable to the electric propulsion devices.
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