2016 Fiscal Year Final Research Report
Elucidation of generation and dissipation processes of micro-meso-scale eddies in multi-scale plasma turbulence
| Project/Area Number |
26800283
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Plasma science
|
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| Research Institution | Nagoya University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
|
| Keywords | プラズマ乱流 / 磁化プラズマ / マルチスケール物理 / 非線形相互作用 |
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| Outline of Final Research Achievements |
In magnetically confined plasma observed in space and fusion devices, density and temperature gradients drive instabilities and associated turbulence. This research clarifies the existence of cross-scale interactions between long-wave-length turbulence due to the dynamics of heavy ions and extremely short-wave-length turbulence due to the dynamics of light electrons. Such a multi-scale turbulence involving different two injection scales has been investigated by means of numerical simulations. We revealed that the mechanism of cross-scale interactions via sub-ion-scale structure, namely intermediate scale between electron and ion scales, which is generated by turbulent mixing or kinetic response of electrons.
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| Free Research Field |
プラズマ科学
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