FusionPapers
図版検索トレンドwiki日本の研究
© 2026 FUSIONPAPERS
About法務情報
トップに戻る

Immediate influence of heating power on turbulent plasma transport

Sanae-I. Itoh, Kimitaka Itoh2013年被引用 20Nuclear FusionIF 3出版社

The theory that describes immediate impact of heating power on pressure-gradient-driven turbulence and turbulent transport (without waiting for the evolution of global parameters and the mean distribution function) is reported. A new mechanism, which is an external source directly coupling with plasma fluctuations in the phase space so as to affect turbulence and transport, is investigated. Application is made to the cases of trapped particle instability and long-range fluctuations, which are driven by background microscopic fluctuations. This theory can predict an abrupt change in transport at the on/off of heating, which has been indicated by experimental observations. The derivative of heating power density by plasma pressure is a key parameter, in addition to conventional spatial gradients. The condition under which this new effect can be observed is also evaluated.

日本語訳

加熱パワーが圧力勾配駆動乱流および輸送に及ぼす即時的影響(巨視的分布や平均分布の時間発展を待たずに現れる影響)を記述する理論を報告する。位相空間におけるプラズマ揺動と直接結合する外部源が乱流および輸送に影響を及ぼすという新たな機構を考察する。この理論を、背景の微視的揺動によって駆動される捕捉粒子不安定性および長波長揺動の場合に適用する。本理論は、実験観測によって示唆されている加熱のオン・オフに伴う輸送の急激な変化を予測することができる。従来の空間勾配に加えて、プラズマ圧力による加熱パワー密度の微分が重要なパラメータとなる。また、この新たな効果が観測され得る条件についても評価する。

この論文にはまだAI要約がありません。

関連論文

How is turbulence intensity determined by macroscopic variables in a toroidal plasma?

2013Nuclear Fusion

Experimental investigation of dynamical coupling between density gradients, radial electric fields and turbulent transport in the JET plasma boundary region

2002Nuclear Fusion

The role of ion and electron electrostatic turbulence in characterizing stationary particle transport in the core of tokamak plasmas

2010Plasma Physics and Controlled Fusion

Core density turbulence in the HSX Stellarator

2015Nuclear Fusion

Transport and Structural Formation in Plasmas

1999Nuclear Fusion

Theory of fully developed turbulence in buoyancy-driven fluids and pressure-gradient-driven plasmas

1998Plasma Physics and Controlled Fusion

New concepts of transport physics in toroidal plasmas

2015Plasma Physics and Controlled Fusion

Contribution of Tore Supra in preparation of ITER

2011Nuclear Fusion

Turbulent transport and structural transition in confined plasmas

1997Plasma Physics and Controlled Fusion

Experimental power balance study on turbulent heat transport at Wendelstein 7-X

2025Plasma Physics and Controlled Fusion