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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
Source PublicationPHYSICS OF PLASMAS
Volume24Issue:9Pages:1-7
AbstractIntense 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.
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationU.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
WOS KeywordDIII-D ; PLASMAS ; TFTR ; ELMS
Indexed BySCI
Language英语
Funding OrganizationU.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 Research AreaPhysics
WOS SubjectPhysics, Fluids & Plasmas
WOS IDWOS:000412107400048
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/33799
Collection中科院等离子体物理研究所
Affiliation1.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
Recommended Citation
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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