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

Effect of electron temperature anisotropy on TEM in reversed-field-pinch plasmas

Y. Yao, T.C. Liu, S.F. Liu, K.E. Zhu, W. Kong, J.C. Li, J.Q. Dong2022年被引用 1Nuclear FusionIF 3出版社

For the first time in the reversed-field-pinch configuration, trapped electron mode (TEM) with anisotropies of electron temperature and its gradient is studied by solving the gyrokinetic integral eigenmode equation. Detailed numerical analyses indicate that TEM is enhanced by the anisotropy with temperature in the direction perpendicular to the magnetic field that is higher than that in the direction parallel to the magnetic field when the latter is kept constant. However, the enhancement is limited, such that TEM is weakened and even stabilized when the anisotropy is higher than a critical value, due to strong Landau damping. In comparison with the isotropic case, the lower Landau damping with the higher parallel electron temperature makes TEM instability easier to excite, which expands the TEM unstable region in the diagram of density and temperature scale lengths. In addition, it is found that the electron temperature gradient in the perpendicular direction offers a stronger driving force on TEM instability than that in the parallel direction. The overall effects of the temperature gradients of electrons and ions, magnetic shear, safety factor and density gradient on TEM in the presence of the anisotropies are presented in detail.

日本語訳

反転磁場ピンチ配位において、電子温度とその勾配の異方性を伴う捕捉電子モード(TEM)が、ジャイロ運動論的積分固有値方程式を解くことにより初めて研究された。詳細な数値解析により、磁場に平行な方向の温度を一定に保った場合、磁場に垂直な方向の温度が磁場に平行な方向の温度よりも高い異方性によってTEMが強化されることが示された。しかしながら、その強化は限定的であり、異方性が臨界値よりも高くなると、強いランダウ減衰によりTEMは弱められ、さらには安定化される。等方性の場合と比較して、より高い平行電子温度によるより弱いランダウ減衰は、TEM不安定性を励起しやすくし、電子密度と温度のスケール長のダイアグラムにおいてTEM不安定領域を拡大する。さらに、磁場に垂直な方向の電子温度勾配は、磁場に平行な方向のそれよりもTEM不安定性に対して強い駆動力を提供することが見出された。異方性の存在下における電子とイオンの温度勾配、磁気シア、安全係数、および密度勾配がTEMに及ぼす全体的な影響が詳細に提示される。

wiki

Reversed field pinchPinch plasma
この論文にはまだAI要約がありません。

関連論文

TEM in toroidal plasmas with anisotropic electron temperature

2022Nuclear Fusion

ηi-mode in toroidal plasmas with anisotropic ion temperature and its gradient

2021Nuclear Fusion

Properties of ubiquitous modes induced by a positive electron temperature gradient

2025Plasma Physics and Controlled Fusion

TEM turbulence and transport dependence on and in EAST with

2026Nuclear Fusion

Reduced electron thermal transport in low collisionality H-mode plasmas in DIII-D and the importance of TEM/ETG-scale turbulence

2012Nuclear Fusion

Simulation prediction of micro-instability transition and associated particle transport in tokamak plasmas

2022Nuclear Fusion

Electron heat transport in ASDEX Upgrade: experiment and modelling

2003Nuclear Fusion

Parametric dependence of turbulent particle transport in high density electron heated FTU plasmas

2007Plasma Physics and Controlled Fusion

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

2022Nuclear Fusion

Electron-scale turbulence characteristics with varying electron temperature gradient in LHD

2024Nuclear Fusion