| Project/Area Number |
23656580
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Nuclear fusion studies
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
YAMAUCHI Yasushi 独立行政法人物質・材料研究機構, 先端的共通技術部門極限計測ユニット, グループリーダー (80354356)
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | プラズマ・壁相互作用 / 表面脱離 / 準安定原子 / ヘリウム / 飛行時間計測 / チョッパー / パルスビーム / 水素 / 脱離計測 / パルス |
|---|
| Research Abstract |
Through the technological development of fusion reactors as the future energy resources, it is quite important to elucidate the reactions taking place on the reactor wall surfaces which lead to the inventory of hydrogen fuel in reactors or ensure the corrosion resistant characteristics of reactors. Since the high-sensitivity identification of the reaction products or the adsorbed species is indispensable for the research, we developed technologies for pulsing the metastable atom beams which enabled the high-sensitivity desorption measurement of adsorbates. Firstly, the technology to generate a beam of metastable atoms in their long-lived excited states was developed and then a hexapole magnet consisting of three pairs of N/S magnets cylindrically around an open bore was introduced to deliver the beam keeping at its high intensity. Lastly, a mechanical chopping system using tuning fork choppers was established for forming a pulsed beam of metastable atoms.
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