Evidence of Partial Reconnection during Sawtooth Crash on EAST ELM-Free H-Mode LHCD Plasma

被引：1

作者：

Xu, Liqing ^{[1
]}

Hu, Liqun ^{[1
]}

Ma, Tianpeng ^{[2
]}

机构：

[1] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China

[2] North Univ Ethn, Fdn Dept, Yinchuan 750021, Peoples R China

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2014年 / 83卷 / 02期

关键词：

COMPUTER-TOMOGRAPHY; DETECTOR ARRAYS; WT-3; TOKAMAK; OSCILLATIONS;

D O I：

10.7566/JPSJ.83.024501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Double q = 1 surfaces during a sawtooth crash were identified in EAST ELM-free H-mode LHCD plasma. An off-axis-peaking and enhanced soft-X-ray (SXR) profile due to the presence of high-Z impurities accumulated in the plasma core region is observed after a sawtooth crash. The observed sawtooth oscillations with a nonmonotonic q profile can be explained satisfactorily by the partial reconnection model. Considerable high-Z impurities near the plasma centre are a response to the formation of double q = 1 surfaces.

引用

页数：4

共 34 条

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