| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
|
|---|
| Outline of Final Research Achievements |
Alfven ion cyclotron wave is excited due to strong anisotropy of ion temperature, which is generated by ICRF heating in the GAMMA 10 tandem mirror device. Multiple AIC waves are simultaneously excited in an unstable frequency band as discrete peaks, of which spatial structure has been investigated by developing a two-channel microwave reflectometer with fast antenna switching. The radial profile, axial variation at five positions and phase profile of the density fluctuations accompanied by the AIC waves have been successfully measured along with those temporal evolution. A clear difference in the axial profile has been found among the AIC waves for the first time. In addition, it is indicated that the difference waves are generated by nonlinear coupling among the AIC waves, which contribute to the relaxation of temperature anisotropy.
|
