2009 Fiscal Year Final Research Report
Investigation of Detached Plasmas with Toroidal Divertor Plasma Simulator
| Project/Area Number |
19360413
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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 | Nagoya University |
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Principal Investigator |
OHNO Noriyasu Nagoya University, 大学院・工学研究科, 教授 (60203890)
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| Co-Investigator(Kenkyū-buntansha) |
KAJITA Shin 名古屋大学, エコトピア科学研究所, 講師 (00455297)
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| Co-Investigator(Renkei-kenkyūsha) |
TAKAMURA Shuichi 愛知工業大学, 工学部, 教授 (40023254)
TOMITA Yukihiro 核融合科学研究所, 理論・シミュレーションセンター, 准教授 (40115605)
SAWADA Keiji 信州大学, 工学部, 准教授 (40262688)
EZUMI Naomichi 長野工業高等専門学校, 電子制御工学科, 准教授 (20321432)
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| Project Period (FY) |
2007 – 2009
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| Keywords | 核融合 / 境界プラズマ / ダイバータ / プラズマ壁相互作用 / 熱流制御 / 非接触プラズマ |
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| Research Abstract |
Detached deuterium recombining plasma has been generated in the toroidal divertor simulator. The electron temperature (0.1-0.4eV) and density (～10^<18> m^<-3>) in the detached plasmas were evaluated with a spectroscopic method using a series of deuterium Balmer line emission from highly excited levels and the Stark broadening of D(2-12). We have investigated the role of volume plasma recombination through Electron-Ion Recombination (EIR) and Molecular Activated Recombination (MAR) processes. Moreover, the carbon erosion in the detached deuterium plasma has been studied with a weight- loss method. It is found that deuterium neutrals generated by EIR process could have a strong influence on the carbon chemical erosion.
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