2015 Fiscal Year Final Research Report
Self-organization of magnetospheric plasma confinement: nonlinear effect of distorted metric in foliated phase space
| Project/Area Number |
23224014
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| Research Category |
Grant-in-Aid for Scientific Research (S)
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| Allocation Type | Single-year Grants |
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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 東京大学, 新領域創成科学研究科, 教授 (80182765)
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| Co-Investigator(Kenkyū-buntansha) |
SAITOH HARUHIKO 東京大学, 大学院新領域創成科学研究科, 客員共同研究員 (60415164)
YANO YOSHIHISA 東京大学, 大学院新領域創成科学研究科, 特任研究員 (90598989)
MORIKAWA JUNJI 東京大学, 大学院新領域創成科学研究科, 助教 (70192375)
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, 准教授 (80360428)
TAKASE YUICHI 東京大学, 大学院新領域創成科学研究科, 教授 (70292828)
NISHIURA MASAKI 東京大学, 大学院新領域創成科学研究科, 准教授 (60360616)
KAWAZURA YOHEI 東京大学, 大学院新領域創成科学研究科, 助教 (80725375)
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| Project Period (FY) |
2011-04-01 – 2016-03-31
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| Keywords | 自己組織化 / 渦 / 磁気圏型プラズマ / 非正準ハミルトン力学 / 葉層構造 / 階層構造 / 先進核融合 / 逆拡散 |
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| Outline of Final Research Achievements |
While vortexes are ubiquitous in the Universe, the basic mechanism of their creation remains incompletely understood. The delineation of the self-organizing processes will bring about immense advances in physics and engineering of various vertical phenomena, leading to innovations in controlling or optimizing vertical structures.
The plasma vortex in a magnetospheric system has been studied in the perspective of space-time geometry. In a magnetosphere, the plasma self-organizes to a state with a steep density gradient. Although the creation of gradient is seemingly contradicting the entropy principle, the resulting nontrivial structure is a stable equilibrium if we properly take into account the topological constraint. We have given the experimental proof of the spontaneous confinement of plasma in a dipole magnetic field. Because of the high-performance plasma confinement and heating, this system has scientific potential for realizing advanced fusion.
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| Free Research Field |
プラズマ物理学，非線形科学
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