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The build-up of energetic electrons triggering electron cyclotron emission bursts due to a magnetohydrodynamic mode at the edge of tokamaks
Li, Erzhong1; Austin, M. E.2; White, R. B.3; Taylor, G.3
2017-09-01
发表期刊PHYSICS OF PLASMAS
卷号24期号:9页码:1-7
摘要Intense bursts of electron cyclotron emission (ECE) triggered by magnetohydrodynamic (MHD) instabilities such as edge localized modes have been observed on many tokamaks. On the DIII-D tokamak, it is found that a MHD mode is necessary in order to trigger the ECE bursts in the low collisionality regime at the plasma edge. ORBIT-code simulations have shown that energetic electrons build up due to an interaction between barely trapped electrons with a MHD mode (f = 50 kHz for the current case). The energetic tail of the electron distribution function develops a bump within several microseconds for this collisionless case. This behavior depends on the competition between the perturbing MHD mode and slowing down and pitch angle scattering due to collisions. For typical DIII-D parameters, the calculated ECE radiation transport predicted by ORBIT is in excellent agreement with ECE measurements, clarifying the electron dynamics of the ECE bursts for the first time. Published by AIP Publishing.
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
资助者U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences ; DOE Office of Science(DE-FG03-97ER54415 ; DE-AC02-09CH11466 ; DE-FG02-95ER54309 ; DE-FC02-04ER54698) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences ; DOE Office of Science(DE-FG03-97ER54415 ; DE-AC02-09CH11466 ; DE-FG02-95ER54309 ; DE-FC02-04ER54698)
DOI10.1063/1.4999186
关键词[WOS]DIII-D ; PLASMAS ; TFTR ; ELMS
收录类别SCI
语种英语
资助者U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences ; DOE Office of Science(DE-FG03-97ER54415 ; DE-AC02-09CH11466 ; DE-FG02-95ER54309 ; DE-FC02-04ER54698) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences ; DOE Office of Science(DE-FG03-97ER54415 ; DE-AC02-09CH11466 ; DE-FG02-95ER54309 ; DE-FC02-04ER54698)
WOS研究方向Physics
WOS类目Physics, Fluids & Plasmas
WOS记录号WOS:000412107400048
引用统计
文献类型期刊论文
条目标识符http://ir.hfcas.ac.cn:8080/handle/334002/33799
专题中科院等离子体物理研究所
作者单位1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China
2.Univ Texas Austin, RLM 11-222, Austin, TX 78712 USA
3.Princeton Univ, Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA
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GB/T 7714
Li, Erzhong,Austin, M. E.,White, R. B.,et al. The build-up of energetic electrons triggering electron cyclotron emission bursts due to a magnetohydrodynamic mode at the edge of tokamaks[J]. PHYSICS OF PLASMAS,2017,24(9):1-7.
APA Li, Erzhong,Austin, M. E.,White, R. B.,&Taylor, G..(2017).The build-up of energetic electrons triggering electron cyclotron emission bursts due to a magnetohydrodynamic mode at the edge of tokamaks.PHYSICS OF PLASMAS,24(9),1-7.
MLA Li, Erzhong,et al."The build-up of energetic electrons triggering electron cyclotron emission bursts due to a magnetohydrodynamic mode at the edge of tokamaks".PHYSICS OF PLASMAS 24.9(2017):1-7.
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