2010 Fiscal Year Final Research Report
Theoretical study on singularity and matching problem for stability analysis of flowing plasma
| Project/Area Number |
21860091
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Single-year Grants |
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| Research Field |
Nuclear fusion studies
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| Research Institution | Japan Atomic Energy Agency |
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Principal Investigator |
SHIRAISHI Junya 独立行政法人日本原子力研究開発機構, 核融合研究開発部門, 任期付研究員 (60513223)
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| Project Period (FY) |
2009 – 2010
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| Keywords | プラズマ / 核融合 |
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| Research Abstract |
The matching method can extract the most important effect in the stability analysis. But for flowing plasmas, it is shown that the conventional matching method falls short of stability analysis since positions of singular points are not known a priori. We generalize the matching method by invoking inner layers with finite width, and show that the generalized method can be applied to flowing plasmas. By numerical studies based on the generalized matching theory, we clarified the location where the plasma flow plays a significant role. Additionally, based on the generalized matching theory, we derive an analytic dispersion relation, and clarified the most important physical effect affecting the stability of flowing plasmas.
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