Observation of precursor magnetic oscillations to the H-mode transition of the ASDEX tokamak.
Observation of precursor magnetic oscillations to the H-mode transition of the ASDEX tokamak.
复制标题
观察 ASDEX 托卡马克 H 模式转变的前兆磁振荡。
DOI：
10.1103/physrevlett.62.430
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发表时间：
1989
影响因子：
8.6
通讯作者：
Kornherr
中科院分区：
文献类型：
--
作者：
Toi;Gernhardt;Klüber;Kornherr
在没有锯齿振荡的ASDEX H模放电的磁涨落中发现了L到H相变的前兆。该前驱体是m=4，n=1模式，它与m=1，n=1内部模式去耦合。这一前兆也出现在边缘局域模和H-L相变附近。振幅的时间行为表明，这些转变不是由边缘电子温度决定的，而是由边缘电流密度决定的。
A precursor to the L-to-H transition is identified in magnetic fluctuations of the ASDEX H-mode discharges which are initiated without a sawtooth oscillation. This precursor is the m = 4,n = 1 mode which is uncoupled with the m = 1,n = 1 internal mode. This precursor appears also near the edge localized mode and H-to-L transition. The behavior in time of the amplitude suggests that these transitions are governed, not by the edge electron temperature, but by the edge current density.