On the application of electron cyclotron emission imaging to the validation of theoretical models of magnetohydrodynamic activity

被引：13

作者：

Tobias, B. J. ^{[1
]}

Boivin, R. L. ^{[2
]}

Boom, J. E. ^{[3
]}

Classen, I. G. J. ^{[3
]}

Domier, C. W. ^{[1
]}

Donne, A. J. H. ^{[3
,4
]}

Heidbrink, W. W. ^{[5
]}

Luhmann, N. C., Jr. ^{[1
]}

Munsat, T. ^{[6
]}

Muscatello, C. M. ^{[5
]}

Nazikian, R. ^{[7
]}

Park, H. K. ^{[8
]}

Spong, D. A. ^{[9
]}

Turnbull, A. D. ^{[2
]}

Van Zeeland, M. A. ^{[2
]}

Yun, G. S. ^{[8
]}

机构：

[1] Univ Calif Davis, Davis, CA 95616 USA

[2] Gen Atom Co, San Diego, CA 92186 USA

[3] EURATOM, FOM Inst Plasma Phys Rijnhuizen, NL-340 BE Nieuwegein, Netherlands

[4] Eindhoven Univ Technol, Dept Appl Phys, NL-5600 MB Eindhoven, Netherlands

[5] Univ Calif Irvine, Irvine, CA 92697 USA

[6] Univ Colorado, Boulder, CO 80302 USA

[7] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA

[8] Pohang Univ Sci & Technol, Pohang, Gyungbuk, South Korea

[9] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

来源：

PHYSICS OF PLASMAS | 2011年 / 18卷 / 05期

关键词：

GYROFLUID MODEL;

D O I：

10.1063/1.3563572

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Two-dimensional (2D) imaging of electron temperature perturbations provides a powerful constraint for validating theoretical models describing magnetohydrodynamic plasma behavior. In observation of Alfven wave induced temperature fluctuations, electron cyclotron emission imaging provides unambiguous determination of the 2D eigenmode structure. This has provided support for nonperturbative eigenmode solvers which predict symmetry breaking due to poloidal flows in the fast ion population. It is shown that for Alfven eigenmodes, and in cases where convective flows or saturated perturbations lead to nonaxisymmetric equilibria, electron plasma displacements oriented parallel to a gradient in mean temperature are well defined. Furthermore, during highly dynamic behavior, such as the sawtooth crash, highly resolved 2D temperature behaviors yield valuable insight. In particular, addressing the role of adiabatic heating on time scales much shorter than the resistive diffusion time through the additional diagnosis of local electron density allows progress to be made toward a comprehensive understanding of fast reconnection in tokamak plasmas. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3563572]

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页数：5

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