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

Stabilization of the trapped-electron mode by a collisionally broadened Landau resonance

F. L. Hinton, D.W. Ross1976年被引用 9Nuclear FusionIF 3出版社

The non-local theory of the dissipative trapped-electron instability, including magnetic shear, is extended to higher electron collisionality. In regions sufficiently close to a rational magnetic surface the trapped-electron mode becomes a 'collisionless' drift mode, which is Landau-damped (where η ≡ ∂ ln Te/∂ ln ne > 0). The collisional broadening of the untrapped electron Landau resonance makes this an effective stabilization mechanism, even when the parallel phase velocity lies in the trapped-particle region of parallel velocities. For the normal temperature gradient (η > 0) and for large aspect ratio (−1 > 1) a sufficient condition for stability is obtained that is independent of shear: ½ η1/3 < 1. For the inverted gradient case (η < 0) a shear stabilization criterion is derived.

日本語訳

非局所的な捕捉電子不安定性の理論は、磁気シアを含めて、より高い電子衝突頻度の領域に拡張される。有理磁気面に十分近い領域では、捕捉電子モードは「無衝突」ドリフトモードとなり、ランダウ減衰を受ける(ここでη ≡ ∂ ln Te/∂ ln ne > 0)。無衝突電子のランダウ共鳴の衝突による広がりは、平行位相速度が捕捉粒子の平行速度領域にある場合でも、これが有効な安定化機構となることを示す。通常の温度勾配(η > 0)および大きなアスペクト比(−1 > 1)の場合、シアに依存しない安定性の十分条件が得られる:½ η1/3 < 1。逆温度勾配の場合(η < 0)には、シアによる安定化基準が導出される。

wiki

Landau damping
この論文にはまだAI要約がありません。

関連論文

Stability of the trapped electron mode in steep density and temperature gradients

2006Plasma Physics and Controlled Fusion

Localized drift dissipative modes in Tokamaks

1973Nuclear Fusion

Interpretation of negative central shear electron internal transport barriers

2006Plasma Physics and Controlled Fusion

Shear stabilization of drift dissipative instabilities

1973Nuclear Fusion

Global gyro-kinetic study of magnetic shaping effects on linear trapped electron mode instability in normal/reversed magnetic shear plasmas

2022Nuclear Fusion

Kinetic microtearing modes and reconnecting modes in strongly magnetised slab plasmas

2015Plasma Physics and Controlled Fusion

Electron heat transport studies

2006Plasma Physics and Controlled Fusion

Role of the current density profile on drift wave stability in internal transport barrier reversed magnetic shear experiments at JET and Tore Supra

2003Plasma Physics and Controlled Fusion

Flow shear stabilization of a hybrid dissipative trapped electron-ion temperature gradient mode in tokamaks

1998Plasma Physics and Controlled Fusion

Role of collisionless trapped electron mode in tokamak plasmas with electron internal transport barrier

2002Plasma Physics and Controlled Fusion