2016 Fiscal Year Final Research Report
Energetic ion induced excitation dynamics of hydrogen molecule in divertor plasma
| Project/Area Number |
26420848
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Nuclear fusion studies
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| Research Institution | Nagoya University (2015-2016)
Tohoku University (2014) |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
TAKAHASHI HIROYUKI 東北大学, 大学院工学研究科, 助教 (30768982)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 境界層プラズマ / プラズマ・核融合 / 原子分子過程 / 高エネルギーイオン / 再結合プラズマ |
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| Outline of Final Research Achievements |
Plasma, the ionized state of gas, suffers from recombination, reverse process of ionization, in the divertor region of magnetically confined fusion devices. Effect of energetic ion flowing into the divertor region on the recombination processes is investigated. Combining a plasma experimental device and a ion beam injector, we have developed a divertor plasma simulating environment, which enables us to control experimental condition more precisely and more easily than actual fusion devices. We have found population density of excited states, which is an indicator of the recombining processes, decreases when the energetic ion density increases experimentally for the first time. A model we have developed by including the effect of energetic ion on production-annihilation processes of excited state qualitatively agree with the experiment.
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| Free Research Field |
プラズマ科学
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