2009 Fiscal Year Final Research Report
Waves and Instabilities in Magnetospheric Rotating Plasmas
| Project/Area Number |
19340170
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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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 | The University of Tokyo |
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Principal Investigator |
YOSHIDA Zensho The University of Tokyo, 大学院・新領域創成科学研究科, 教授 (80182765)
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| Co-Investigator(Kenkyū-buntansha) |
OGAWA Yuichi 東京大学, 大学院・新領域創成科学研究科, 教授 (90144170)
FURUKAWA Masaru 東京大学, 大学院・新領域創成科学研究科, 準教授 (80360428)
SAITOH Haruhiko 東京大学, 大学院・新領域創成科学研究科, 助教 (60415164)
MORIKAWA Junji 東京大学, 大学院・新領域創成科学研究科, 助教 (70192375)
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| Project Period (FY) |
2007 – 2009
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| Keywords | プラズマ物理 / 磁気圏プラズマ / 自己組織化 / 非エルミート性 / 非線形波動 / 異常輸送 / 乱流 |
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| Research Abstract |
A magnetospheric configuration gives rise to various peculiar plasma phenomena that pose conundrums to astrophysical studies. We have demonstrated that the plasma self-organizes a stable vortex, in which particles diffuse inward to steepen the density gradient. By electron-cyclotron heating (ECH), we can produce ultra high beta (>0.7) stable (confinement time>0.1s) plasma. We can also produce a pure-electron plasma by emitting electrons from an electron gun placed in the vicinity of the confinement region. The confinement time is longer than 300s. The self-organized confinement is explained by the "distortion" of the phase space of magnetized particles in a strongly inhomogeneous magnetic field.
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[Journal Article] RT-1 Project : magnetoshpere-like plasma confinement2007
Author(s)
Z. Yoshida, Y. Ogawa, J. Morikawa, M. Furukawa, H. Saitoh, M. Hirota, D. Hori, J. Shiraishi, S. Watanabe, S. Numazawa, Y. Yano, J. Suzuki
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Journal Title
Transac.Fusion Sci.Tech. 51
Pages: 29-33
Peer Reviewed
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