2011 Fiscal Year Final Research Report
Structure formation and particle acceleration in collisionless shock waves
| 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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| Keywords | プラズマ物理 |
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| 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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