| Budget Amount *help |
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2012: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2011: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2010: ¥9,620,000 (Direct Cost: ¥7,400,000、Indirect Cost: ¥2,220,000)
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| Research Abstract |
Electron temperature gradient (ETG) perpendicular to magnetic field lines is formed by superimposing high-temperature electrons of an electron cyclotron resonance (ECR) plasma upon low-temperature thermionic electrons. The formed ETG is found to excite a high-frequency fluctuation (ETG mode), and also, to stimulate a low-frequency fluctuation (drift-wave mode) excitement via multi-scale nonlinear interaction, which ultimately causes ETG mode energy to be transferred to the drift-wave mode. Furthermore, the strong E×B velocity shear is demonstrated to suppress the ETG mode and drift-wave mode, experimentally.
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