| Co-Investigator(Kenkyū-buntansha) |
佐々木 明 国立研究開発法人量子科学技術研究開発機構, 関西光科学研究所 光量子科学研究部, 上席研究員(定常) (10215709)
坂上 裕之 核融合科学研究所, ヘリカル研究部, 助教 (40250112)
仲野 友英 国立研究開発法人量子科学技術研究開発機構, 那珂核融合研究所 先進プラズマ研究部, 上席研究員(定常) (50354593)
中村 信行 電気通信大学, レーザー新世代研究センター, 教授 (50361837)
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| Budget Amount *help |
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2016: ¥9,620,000 (Direct Cost: ¥7,400,000、Indirect Cost: ¥2,220,000)
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| Outline of Final Research Achievements |
It is necessary to construct a collisional-radiative model for tungsten ions in order to examine behavior of tungsten impurities in fusion plasmas and the radiation power. We have constructed a collisional-radiative model with including recombination processes, which were not considered before for tungsten ions, and tried to reconstruct the extreme ultraviolet spectra of tungsten ions with the model calculations. The unresolved transition array, quasi-continuum spectral feature seen at 4-7nm was not well reproduced by including the recombination processes to the model. Some other atomic processes should be examined further. The spectral peaks seen at 2-4nm are not changed with their profiles by recombination processes and are useful to identify charge states in plasmas. We used these peaks to examine the behavior of tungsten ions in LHD plasmas.
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