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	磁约束等离子体中的射频波电流驱动和流驱动
	高喆 ; GAO Zhe
	2016-03-30 ; 2016-03-30
关键词	磁约束等离子体 射频波 电流驱动 流驱动 等离子体旋转 coherence optics Fourier domain mode locked laser optical coherence tomography optical coherence microscopy semiconductor optical amplifier TL631.24
其他题名	Radio-frequency current drive and flow drive in magnetic confinement fusion plasma
中文摘要	射频波可以进入聚变等离子体,通过无碰撞机制将能量和动量沉积于其中,在加热等离子体的同时,还可以驱动等离子体电流和等离子体流.等离子体电流的非感应维持是托卡马克类型聚变装置稳态运行的关键,而电流剖面的控制及等离子体流的存在对于抑制磁流体不稳定性、建立和维持高性能的约束模式至关重要,因此射频波电流驱动和流驱动在磁约束聚变等离子体物理研究中有重要意义.本文从等离子体中波与粒子相互作用的基本物理出发,对磁约束等离子体中射频波电流驱动和流驱动的研究现状、面临的挑战、以及可能的研究趋势进行了简要评述.几个关键问题被特别指出,包括:共振吸收机制与高密度下射频波电流驱动效率衰减的内在联系;非共振驱动机制的可行性探讨;从动量获取和动量弛豫的平衡关系出发探索共振机制下提高驱动效率的可能性;流驱动中射频波的直接驱动和间接驱动效应,尤其是射频波有质动力效应;射频波耦合和传播过程中复杂的非线性过程对电流驱动和流驱动的影响等.; Radio-frequency(rf) waves can penetrate fusion plasmas and deposit energy and momentum through collisionless mechanisms, resulting in plasma heating and, in some cases, current drive and flow drive. The advantage of this noninductive current drive is that a tokamak-type fusion reactor can be operated at a steady state. Meanwhile, an appropriate profile of plasma current and a significant plasma flow are important in stabilizing magnetohydrodynamics instabilities and realizing and sustaining high-performance confinement regimes. Therefore, rf current drive and flow drive are important in research on the physics of magnetic confinement fusion plasma. This paper presents the elementary physics of wave–particle interactions in plasmas, reviews the present status and challenges of research on rf current drive and flow drive, and suggests possible research strategies. Several problems are highlighted. These include the intrinsic relation of resonant absorption to the reduction of rf current drive efficiency in high-density plasmas; the existence/feasibility of a nonresonant drive scheme; the possibility of increasing the drive efficiency within the resonant mechanism; the direct and indirect effects of rf waves in flow drive, especially the generalized ponderomotive force generated by rf waves; and nonlinear processes during the coupling and propagation of waves, such as parametric decay instabilities, and their possible effects on current drive and flow drive.
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/143263]
专题	清华大学
推荐引用方式 GB/T 7714	高喆,GAO Zhe. 磁约束等离子体中的射频波电流驱动和流驱动[J],2016, 2016.
APA	高喆,&GAO Zhe.(2016).磁约束等离子体中的射频波电流驱动和流驱动..
MLA	高喆,et al."磁约束等离子体中的射频波电流驱动和流驱动".(2016).

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