Instantaneous Correlation between ELM-like MHD Activity and Abrupt Non-local Reduction of Transport at Internal Transport Barrier Formation in JT-60U High-βp Plasmas
Instantaneous Correlation between ELM-like MHD Activity and Abrupt Non-local Reduction of Transport at Internal Transport Barrier Formation in JT-60U High-βp Plasmas
复制标题
JT-60U 高βp 等离子体中内部传输势垒形成时类 ELM 的 MHD 活动与传输的突然非局部减少之间的瞬时相关性
DOI：
10.1585/jspf.79.1218
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
Y. Miura
中科院分区：
文献类型：
--
作者：
S. Neudatchin;T. Takizuka;N. Hayashi;A. Isayama;H. Shirai;T. Fujita;Y. Kamada;Y. Koide;K. Itoh;Y. Miura
具有内部传输势垒 (ITB) 的正向和反向剪切 JT-60U 托卡马克等离子体中的传输演化通常通过非局部传输分岔发生。在本文中，我们重点介绍了 JT-60U 高 βp 等离子体中新型边缘-核心瞬时相互作用。核心电子热通量（ITB事件）在时间上的突然（毫秒时间尺度）和在空间上的宽广（短半径约0.4）减少与产生增强的Hα水平的ELM的开始在毫秒时间尺度上相关。这一结果暗示了通过诱导类似 ELM 的 MHD 活性来控制立即非局部形成 ITB。
Transport evolution in normal and reversed shear JT-60U tokamak plasmas with internal transport barrier (ITB) often occurs via non-local transport bifurcations. In the present paper, we highlight new type of edge-core instantaneous interplay in JT-60U high-βp plasmas. Abrupt in time (ms timescale) and wide in space (˜0.4 of minor radius) reduction of electron heat flux in the core (ITB-event) is correlated in ms timescale with the start of an ELM that creates enhanced level of Hα. This result gives a hint of the control to form the ITB immediately and non-locally by inducing the ELM-like MHD activity.
影响因子：
3.3
作者：
T. Fujita;Y. Kamada;S. Ide;S. Takeji;Y. Sakamoto;A. Isayama;T. Suzuki;T. Oikawa;T. Fukuda;Jt U Team
通讯作者：
T. Fujita;Y. Kamada;S. Ide;S. Takeji;Y. Sakamoto;A. Isayama;T. Suzuki;T. Oikawa;T. Fukuda;Jt U Team