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

Enhanced rotation velocities and electric fields, sub-neoclassical energy transport and density pinch from revisited neoclassical theory

André Rogister1998年Plasma Physics and Controlled FusionIF 2.2出版社

We show that the large negative radial electric fields which are measured in front of the separatrix in H-mode discharges are easily explainable on the basis of the rigorous `revisited' neoclassical theory, including finite Larmor radii and inertia effects that was published earlier (Rogister A 1994 Phys. Plasmas 1 619); the same theory naturally leads to sub-neoclassical energy transport and novel particle pinch terms. The calculation has so far been developed only in the high collisionality regime: step sizes comparable to gradient-scale sizes are therefore not required to explain observed properties! Based on the analysis, we conclude that the radial electric field profile develops a well in front of the separatrix when the plasma is unable to sustain ambipolar flows otherwise.

日本語訳

我々は、Hモード放電におけるセパラトリクスの前方で測定される大きな径方向電場が、先に発表された厳密な「再訪」新古典理論(Rogister A 1994 Phys. Plasmas 1 619)に基づいて、有限ラーモア半径および慣性効果を含めて容易に説明できることを示す。同じ理論は、自然に副新古典エネルギー輸送および新規の粒子ピンチ項を導出する。この計算はこれまでのところ高衝突度領域でのみ展開されている。したがって、勾配スケールに匹敵するステップサイズは、観測される現象を説明するために必要ではない。解析に基づき、プラズマがそうでなければ両極性流を維持できない場合に、径方向電場プロファイルがセパラトリクスの前方で井戸を形成すると結論付ける。

この論文にはまだAI要約がありません。

関連論文

Predicting the radial electric field imposed by externally driven radial currents in tokamaks

1994Nuclear Fusion

Investigation of the neoclassical ambipolar electric field in ion-root plasmas on W7-X

2020Nuclear Fusion

Neoclassical theory of rotation and electric field in high collisionality plasmas with steep gradients

2000Physics of Plasmas

Transport modelling including radial electric field and plasma rotation

1994Plasma Physics and Controlled Fusion

Kinetic calculation of neoclassical transport including self-consistent electron and impurity dynamics

2008Plasma Physics and Controlled Fusion

Collisional dynamics of Er in turbulent plasmas in toroidal geometry

2007Nuclear Fusion

Improved kinetic neoclassical transport calculation for a low-collisionality QH-mode pedestal

2016Plasma Physics and Controlled Fusion

Plasma rotation caused by radial electric field in tokamaks: a calculation using the guiding field line model

2002Plasma Physics and Controlled Fusion

Stability of neoclassical EBT operating points

1978Nuclear Fusion

Neoclassical transport in the presence of fluctuations

1992Nuclear Fusion