| 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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| Project Status |
Completed (Fiscal Year 2009)
|
| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2009: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2008: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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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 / イオンエネルギー分布関数 / スペースチャンバー |
|---|
| 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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