Electron temperature fluctuations during sawtooth events in a reversed-field pinch

被引：4
作者：
Kasten, C. P. [1 ]
Den Hartog, D. J. [1 ,2 ]
Stephens, H. D. [1 ,2 ]
Hegna, C. C. [1 ]
Reusch, J. A. [1 ]
机构：
[1] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA
[2] Univ Wisconsin, Ctr Magnet Self Org Lab & Astrophys Plasmas, Madison, WI 53706 USA
来源：
PLASMA PHYSICS AND CONTROLLED FUSION | 2011年 / 53卷 / 11期
基金：
美国国家科学基金会;
关键词：
MADISON SYMMETRICAL TORUS;
D O I：
10.1088/0741-3335/53/11/112001
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：
Electron temperature fluctuations are correlated with the dominant (m, n) = (0, 1) edge-resonant magnetic tearing mode during sawtooth events in the Madison Symmetric Torus reversed-field pinch. Electron temperature fluctuations in phase with the (0, 1) tearing mode are measured using high-repetition-rate Thomson scattering. Immediately prior to the sawtooth the (0, 1) island structure appears to be heat-confining, while during the sawtooth it assumes an isothermal character. Core electron temperature variation is also phase correlated with the (0, 1) mode, suggesting that the edge-resonant tearing mode has an effect on core electron thermal confinement during sawtooth events.
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