Observation of ion scale fluctuations in the pedestal region during the edge-localized-mode cycle on the National Spherical Torus Experiment

被引：17
|
作者：
Diallo, A. [1 ]
Kramer, G. J. [1 ]
Smith, D. R. [2 ,3 ]
Maingi, R. [4 ]
Bell, R. E. [1 ]
Guttenfelder, W. [1 ]
LeBlanc, B. P. [1 ]
Podesta, M. [1 ]
McKee, G. J. [2 ,3 ]
Fonck, R. [1 ,2 ,3 ]
机构：
[1] Princeton Plasma Phys Lab, Princeton, NJ 08540 USA
[2] Univ Wisconsin, Dept Engn Phys, Madison, WI USA
[3] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA
[4] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA
来源：
PHYSICS OF PLASMAS | 2013年 / 20卷 / 01期
关键词：
CORRELATION REFLECTOMETRY; MICROWAVE REFLECTOMETRY; ELM;
D O I：
10.1063/1.4773402
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：
Characterization of the spatial structure of turbulence fluctuations during the edge localized mode cycle in the pedestal region is reported. Using the beam emission spectroscopy and the correlation reflectometry systems, measurements show spatial structure-k(perpendicular to)rho(ped)(i)-ranging from 0.2 to 0.7 propagating in the ion diamagnetic drift direction at the pedestal top. These propagating spatial scales are found to be anisotropic and consistent with ion-scale microturbulence of the type ion temperature gradient and/or kinetic ballooning modes. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4773402]
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页数：8
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