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首页> 外文会议>EPS Conference on Plasma Physics >Interaction between magnetic island, plasma perpendicular flow and turbulence in HL-2A ohmic plasmas
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Interaction between magnetic island, plasma perpendicular flow and turbulence in HL-2A ohmic plasmas

机译：HL-2A欧姆等离子体中磁岛，等离子体垂直流动和湍流之间的相互作用

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1.Introduction The tearing instability associated with magnetic reconnection process was commonly found in astrophysical and laboratory plasmas, e.g., solar flares, coronal mass injection, Earth's magnetosphere and magnetically confined fusion plasmas [1]. The formation of magnetic island associated with tearing mode can change the local plasma profiles and transport [2-4], and if large enough, lead to disruption [5]. However, the observations of internal transport barriers at or near rational surfaces in tokamak plasmas suggest the important role of the magnetic island in the local plasma confinement, via the formation of sheared flows [6-7]. The multi-scale physics such as the interaction between macro-scale MHD modes and micro-scale turbulence was found to play an essential role in the regulation of transport in the core plasma region [8-10], and the interaction between sheared flow and turbulence was considered to be key ingredient in the low-to-high confinement mode transition [11,12]. Therefore, improved understanding of tearing mode physics and the interaction with plasma flow and turbulence is important as it can lead to the improvement of plasma performance and therefore has potential implications for future fusion devices such as the International Thermonuclear Experimental Reactor (ITER).
机译：1.介绍了与磁性重新连接过程相关的撕裂不稳定性，通常存在于天体物理和实验室等离子体中，例如，太阳能耀斑，冠状物质注射，地球磁层和磁心融合等离子体[1]。与撕裂模式相关的磁岛的形成可以改变局部等离子体型材和运输[2-4]，如果足够大，导致破坏[5]。然而，在Tokamak等离子体中的理性表面或附近的内部运输屏障的观察表明磁岛在局部血浆监禁中的重要作用，通过形成剪切流程[6-7]。发现多尺度物理学，例如宏观MHD模式和微观湍流之间的相互作用，在核心等离子体区域[8-10]的运输调节中起重要作用，以及剪切流程之间的相互作用湍流被认为是低于高限制模式转变的关键成分[11,12]。因此，改善了对撕裂模式物理学的理解和与等离子体流动和湍流的相互作用是重要的，因为它可以导致等离子体性能的提高，因此对未来的融合装置（例如国际热核实验反应器（浸泡）具有潜在的影响。

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