The response of short-scale density fluctuations to the activity of beta-induced Alfvén eigenmodes during strong tearing modes on EAST tokamak
The response of short-scale density fluctuations to the activity of beta-induced Alfvén eigenmodes during strong tearing modes on EAST tokamak
复制标题
EAST 托卡马克强撕裂模式期间短尺度密度涨落对 β 诱导的阿尔芬本征模活动的响应
DOI：
10.1088/0031-8949/90/8/085604
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发表时间：
2015-07
期刊：
影响因子：
2.9
通讯作者：
吴国将
中科院分区：
文献类型：
--
作者：
曹光明;李亚东;李群;孙鹏军;吴国将
在EAST装置的快电子等离子体中，经常观察到强撕裂模（TM）中的β诱导阿尔文本征模（BAE）。短尺度的动力学。本文用切向CO2激光集体散射系统初步研究了具有强TM的BAE活动过程中的（k ~ 1.5 4.3）s ρ − ρ密度涨落。结果表明，短尺度密度涨落对TM和BAEs的响应是活跃的，但不同。在密度涨落的低频部分（0- 10 kHz），存在与TM完全对应的谐波振荡。在中高频（10-250 kHz）密度涨落部分，随着BAE的出现，中高频密度涨落开始由几个准相干（QC）模主导，QC模的频率似乎与TM和BAE的变化都有关。这些结果对理解多尺度相互作用物理有一定的启发。
Beta-induced Alfvén eigenmodes (BAEs) during strong tearing modes (TMs) have been.frequently observed in fast-electron plasmas of EAST tokamak. The dynamics of the short-scale.( k ~ 1.5 4.3).s.ρ −.⊥.density fluctuations during the activity of BAEs with strong TMs has been.preliminarily investigated by a tangential CO 2 laser collective scattering system. The results.suggest the active, but different, response of short-scale density fluctuations to the TMs and.BAEs. In the low-frequency (0–10kHz) part of density fluctuations, there are harmonic.oscillations totally corresponding to those of TMs. In the medium-high frequency (10–250 kHz).part of density fluctuations, with the appearance of the BAEs, the medium-high frequency.density fluctuations begin to be dominated by several quasi-coherent (QC) modes, and the.frequencies of the QC modes seem to be related to the changes of both TMs and BAEs. These.results would shed some light on the understanding of the multi-scale interaction physics.
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影响因子：
3.3
作者：
W. Chen;X. Ding;Yi Liu;Q.W. Yang;X. Ji;G. Yuan;Y.P. Zhang;M. Isobe;Y.B. Dong;Y. Huang-Y.-Huan
通讯作者：
W. Chen;X. Ding;Yi Liu;Q.W. Yang;X. Ji;G. Yuan;Y.P. Zhang;M. Isobe;Y.B. Dong;Y. Huang-Y.-Huan
影响因子：
44.1
作者：
P. Terry
通讯作者：
P. Terry
DOI：
10.1063/1.860327
发表时间：
1992-11
期刊：
Physics of fluids. B, Plasma physics
影响因子：
--
作者：
M. Chu;J. M. Greene;L. Lao;A. Turnbull;M. Chance
通讯作者：
M. Chu;J. M. Greene;L. Lao;A. Turnbull;M. Chance
影响因子：
2.2
作者：
G. Z. D. S. Lima;Z. Guimarães-Filho;A. Batista;I. Caldas;S. R. Lopes;R. Viana;I. C. Nascimento;Y. Kuznetsov
通讯作者：
G. Z. D. S. Lima;Z. Guimarães-Filho;A. Batista;I. Caldas;S. R. Lopes;R. Viana;I. C. Nascimento;Y. Kuznetsov
影响因子：
2.2
作者：
E. Mazzucato
通讯作者：
E. Mazzucato