| Project/Area Number |
21540510
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Plasma science
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| Research Institution | Nagoya University |
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Principal Investigator |
TOIDA Meiko 名古屋大学, 理学研究科, 助教 (00273219)
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| Research Collaborator |
式井 建太 名古屋大学, 大学院・理学研究科, 大学院生
後平 拓 名古屋大学, 大学院・理学研究科, 大学院生
近藤 憂一 名古屋大学, 大学院・理学研究科, 大学院生
秋重 竹弘 名古屋大学, 大学院・理学研究科, 大学院生
城宝 潤矢 名古屋大学, 大学院・理学研究科, 大学院生
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2009: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | プラズマ物理 / 無衝突衝撃波 / 磁気音波 / 粒子加速 / 粒子シミュレーション / 不安定性 / 粒子捕捉 |
|---|
| Research Abstract |
Structure formation and particle acceleration in shock waves propagating obliquely to an external magnetic field have been studied with two-dimensional(two space coordinates and three velocities), relativistic, electromagnetic, particle simulations. It is found that as a result of the nonlinear evolution of instabilities driven by electrons trapped and energized in an oblique shock wave, some electrons can escape from the wave and can be further accelerated to much higher energies. Repeated acceleration of ions and associated instabilities are also investigated. In addition, a theory for the effects of ion composition on nonlinear magnetosonic waves is developed and is confirmed by numerical simulations.
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