| Project/Area Number |
15H04235
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Nuclear fusion studies
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| Research Institution | National Institute for Fusion Science |
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Principal Investigator |
KATO DAIJI 核融合科学研究所, ヘリカル研究部, 准教授 (60370136)
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| Co-Investigator(Kenkyū-buntansha) |
坂上 裕之 核融合科学研究所, ヘリカル研究部, 助教 (40250112)
中村 信行 電気通信大学, レーザー新世代研究センター, 准教授 (50361837)
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| Co-Investigator(Renkei-kenkyūsha) |
MURAKAMI Izumi 核融合科学研究所, ヘリカル研究部, 教授 (30290919)
GOTO Motoshi 核融合科学研究所, ヘリカル研究部, 准教授 (00290916)
MORITA Shigeru 核融合科学研究所, ヘリカル研究部, 教授 (80174423)
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| Research Collaborator |
DING Xiaobin 西北師範大学, 准教授
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥14,560,000 (Direct Cost: ¥11,200,000、Indirect Cost: ¥3,360,000)
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| Keywords | タングステン分光計測 / 核融合プラズマ診断 / 可視禁制線 / タングステン多価イオン / プラズマ・核融合 / 原子・分子物理 / 磁気双極子禁制線 / 多価イオン原子過程 / 核融合プラズマ / ITER |
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| Outline of Final Research Achievements |
Tungsten materials with excellent resistance to high heat load are used for plasma facing materials of International Thermonuclear Experimental Reactor (ITER). However, there is a concern about radiation collapse of core plasmas due to accumulation of sputtered tungsten particles into the core plasmas. Thus, understanding of tungsten transport characteristics in magnetic-confinement plasmas is an important issue. For the first time in the world, we have established a method for measurements of highly-charged tungsten ions in magnetic-confinement fusion plasmas using emission lines in the near-ultraviolet-visible region. As a result, the tungsten measurement of the core plasma, which had been performed in the soft X-ray region up to now, became possible in the long-wavelength region where neutron shielding of detectors is not required by the use of optical fibers.
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