| Budget Amount *help |
¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
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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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