2012 Fiscal Year Final Research Report
Investigation and Control of Helium Defects Process on TungstenWall by using Newly Developed High Particle Flux Plasma Source
| Project/Area Number |
20360414
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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 | Aichi Institute of Technology |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
KURISHITA Hiroaki 東北大学, 金属材料研究所, 准教授 (50112298)
TAKAHASHI Akiyuki 東京理科大学, 工学部, 准教授 (00366444)
OONO Moriyasu 名古屋大学, 大学院・工学研究科, 教授 (60203890)
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| Project Period (FY) |
2008 – 2012
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| Keywords | プラズマ・核融合 / プラズマ-壁相互作用 / タングステン / 繊維状ナノ構造ヘリウム損傷 / 高熱流プラズマ生成 / 黒体 / 熱伝達係数 |
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| Research Abstract |
The new plasma device, AIT-PID, has been constructed, producing the high heat flux plasmas with high density of more than 1018 m-3 and the high electron energy (the high temperature ~ 30 eV; the low one ~ 5 eV). The fiber-form nanostructure, one of the important helium defect of tungsten (W), has been formed on the various grade of W’s. The surface properties like electron emission, radiation emissivity and sputtering yield have been investigating, showing serious effects of nanostructure on these characteristics. In addition the way of recovering from such defects has been demonstrated with the technique of plasma annealing, and the mitigation method using a thin carbon fil has been clarified.
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