论文标题
融合等离子体中的运输障碍发作和边缘湍流不足
Transport barrier onset and edge turbulence shortfall in fusion plasmas
论文作者
论文摘要
湍流等离子体在应用额外的自由能源或边缘工作条件的修改后，特别是自组织对高能状态。数十年来，这种分叉发生的机制已积极争论。增强的限制发生在等离子体边缘，几十年来，预测的湍流强度的短缺一直困扰科学家。我们从原始动力学方程式显示，这两个问题都连接在一起，并且限制等离子湍流与其物质边界的相互作用对于解决预测的湍流短缺并触发等离子边缘的自发传输屏障发作至关重要。这两个问题都决定了改进的限制，并且是融合研究的核心。提出了对基本机制的全面讨论。这些结果与寻求磁融合的高度相关的结果也可能与湍流自我接转活性的流体和等离子体中的许多问题有关。
Turbulent plasmas notably self-organize to higher energy states upon application of additional free energy sources or modification of edge operating conditions. Mechanisms whereby such bifurcations occur have been actively debated for decades. Enhanced confinement occurs at the plasma edge, where a shortfall of predicted turbulence intensity has been puzzling scientists for decades. We show, from the primitive kinetic equations that both problems are connected and that interplay of confined plasma turbulence with its material boundaries is essential to curing the shortfall of predicted turbulence and to triggering spontaneous transport barrier onset at the plasma edge. Both problems determine access to improved confinement and are central to fusion research. A comprehensive discussion of the underlying mechanisms is proposed. These results, highly relevant to the quest for magnetic fusion may also be generic to many problems in fluids and plasmas where turbulence self-advection is active.
