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Turbulence behaviour in the presence of transport barriers

K H Burrell2006年Plasma Physics and Controlled FusionIF 2.2出版社

There is general agreement that the creation of transport barriers in magnetized plasmas is associated with the reduction in turbulence-driven transport. The fundamental physics involved in barrier formation is the effect of equilibrium E × B shear and zonal flows on turbulence and transport. This paper focuses on three major issues in turbulence and transport barriers that were discussed at the Tenth IAEA Technical Committee Meeting on H-Mode Physics and Transport Barriers: (1) zonal flows and their effects on turbulence, (2) spatial spreading of turbulence from regions of instability to regions of stability and (3) the effects of short wavelength turbulence. This work gives a short summary of experimental work bearing on each of the themes and raises fundamental questions to motivate future research in each of these areas.

日本語訳

磁化プラズマにおける輸送障壁の形成が、乱流駆動輸送の低減と関連していることについては、広く一致した見解がある。障壁形成に関わる基礎物理は、平衡E×Bシアと帯状流が乱流および輸送に及ぼす効果である。本論文は、第10回IAEA Hモード物理および輸送障壁に関する技術会合で議論された、乱流および輸送障壁に関する3つの主要な論点に焦点を当てる:(1) 帯状流とその乱流への効果、(2) 不安定性領域から安定性領域への乱流の空間的拡がり、(3) 短波長乱流の効果。本稿は、各テーマに関する実験的研究の概要を示し、それぞれの分野における今後の研究を動機づける基礎的な問いを提起する。

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Transport barrier
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