| Budget Amount *help |
¥16,770,000 (Direct Cost: ¥12,900,000、Indirect Cost: ¥3,870,000)
Fiscal Year 2020: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2019: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2018: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2017: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2016: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
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| Outline of Final Research Achievements |
Spectroscopic study of W ions has been carried out for establishment of ion density evaluation method and technical development toward transport study. In LHD the density of W ions was evaluated from number of injected W particles and radial profiles of W EUV spectra, and theoretical model of the emission coefficient of W ions was optimized. The density evaluation method was established for Zn-like W44+, Cu-like W45+, and W24+-W26+ identified in the pseudo-continuum spectra. A C-R model was constructed for intensity analysis of measured magnetic forbidden lines (M1) of W ions, and densities of W26+ and W27+ ions was evaluated as a pioneering work. In EAST tokamak with full W divertor radial profiles of EUV spectra were successfully measured with high-time resolution of 10-20ms by installing a CMOS detector. The transport study of W ions was thus ready. In addition, a multi-fiber-channel visible spectrometer system was newly installed on EAST for observation of M1 transitions of W ions.
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