Turbulent relaxation patterns in SOL plasma

IF 2.1 2区物理与天体物理 Q2 PHYSICS, FLUIDS & PLASMAS

Plasma Physics and Controlled Fusion Pub Date : 2024-08-28 DOI:10.1088/1361-6587/ad705c

R Varennes, G Dif-Pradalier, P Ghendrih, V Grandgirard, O Panico, Y Sarazin, E Serre, D Zarzoso

引用次数: 0

Abstract

Relaxations of localized over-density in a plane transverse to the magnetic field are numerically investigated under the effect of drift-wave and interchange drives in SOL conditions. Such a controlled departure from thermodynamic equilibrium allows the investigation of fundamental processes at play in cross-field transport. Interchange instabilities generate ballistic outward radial flux with low amplitude zonal flow patterns, whereas drift-wave instabilities result in symmetric radial flux with large amplitude zonal flow patterns. When both instabilities are considered, the combined effects tend to favor drift-waves, leading to a weaker outward flux with larger zonal flow patterns.

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SOL 等离子体中的湍流弛豫模式

在 SOL 条件下的漂移波和交换驱动作用下，对磁场横向平面上局部过密度的弛豫进行了数值研究。这种对热力学平衡的受控偏离允许对跨磁场传输中的基本过程进行研究。交换不稳定性会产生具有低振幅带状流模式的弹道向外径向通量，而流波不稳定性则会产生具有大振幅带状流模式的对称径向通量。当同时考虑这两种不稳定性时，综合效应倾向于流波，从而导致较弱的向外通量和较大的带状流模式。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Plasma Physics and Controlled Fusion 物理-物理：核物理

CiteScore

4.50

自引率

13.60%

发文量

224

审稿时长

4.5 months

期刊介绍： Plasma Physics and Controlled Fusion covers all aspects of the physics of hot, highly ionised plasmas. This includes results of current experimental and theoretical research on all aspects of the physics of high-temperature plasmas and of controlled nuclear fusion, including the basic phenomena in highly-ionised gases in the laboratory, in the ionosphere and in space, in magnetic-confinement and inertial-confinement fusion as well as related diagnostic methods. Papers with a technological emphasis, for example in such topics as plasma control, fusion technology and diagnostics, are welcomed when the plasma physics is an integral part of the paper or when the technology is unique to plasma applications or new to the field of plasma physics. Papers on dusty plasma physics are welcome when there is a clear relevance to fusion.