Multi-scale interaction between tearing modes and micro-turbulence in the HL-2A plasmas

被引：0

作者：

蒋敏 ^{[1
]}

许宇鸿 ^{[2
]}

石中兵 ^{[1
]}

钟武律 ^{[1
]}

陈伟 ^{[1
]}

柯锐 ^{[1
]}

李继全 ^{[1
]}

丁玄同 ^{[1
]}

程钧 ^{[2
]}

季小全 ^{[1
]}

杨曾辰 ^{[1
]}

施培万 ^{[3
]}

闻杰 ^{[1
]}

方凯锐 ^{[1
]}

吴娜 ^{[1
]}

何小雪 ^{[1
]}

梁桉树 ^{[1
]}

刘仪 ^{[1
]}

杨青巍 ^{[1
]}

许敏 ^{[1
]}

HL-2A Team ^{[1
]}

机构：

[1] Southwestern Institute of Physics

[2] Institute of Fusion Science, School of Physical Science and Technology, Southwest Jiaotong University

[3] School of Physics, Dalian University of Technology

来源：

Plasma Science and Technology | 2020年 / 22卷 / 08期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

D O I：

暂无

中图分类号：

TL612 [];

学科分类号：

082701 ;

摘要：

The influence of m/n=2/1(m and n are poloidal and toroidal mode numbers) tearing modes on plasma perpendicular flows and micro-fluctuations has been investigated in HL-2 A neutral beam injection heated L-mode plasmas. It is found that the local perpendicular rotation velocity and turbulence energy are modulated by the alternation between the island X-point and O-point of the naturally rotating tearing modes. Cross-correlation analysis indicates that the modulation of density fluctuations by the tearing mode is not only limited to the island region, but also occurs in the edge region near the last closed flux surface. The turbulence exhibits distinct spectral characteristics inside and outside the island region. In addition, it is observed that the particle flux near the strike point is also significantly impacted by the tearing modes. The experimental evidence reveals that there are strong core-edge interactions between the core tearing modes and the edge transport.

引用

页码：4 / 10

页数：7

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