Observation of Mode like Coherent Structures in Curved Magnetic Fields of a Simple Magnetized Torus
Observation of Mode like Coherent Structures in Curved Magnetic Fields of a Simple Magnetized Torus
复制标题
简单磁化环面弯曲磁场中类模相干结构的观察
DOI：
10.1002/ctpp.200410050
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发表时间：
2004
影响因子：
1.6
通讯作者：
A. Piel
中科院分区：
文献类型：
--
作者：
F. Greiner;D. Block;A. Piel
研究了大尺度结构在简单磁化环面（SMT）弯曲磁场中的时空动力学。实验在SMT BLAAMANN中进行，并采用条件平均（CA）和互相关（CCF）技术对Langmuir探针数据进行处理。通过对射频和热离子放电的详细比较，表明观察到的大尺度结构的一般特征与放电机制无关。此外，观测到的大尺度结构具有明显的时空周期性，这表明了类似模态的描述。因此，观测到的相干结构与逆能量级联之间的推测关系再次受到质疑。（©2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim）
The spatio‐temporal dynamics of large‐scale structures in curved magnetic field of simple magnetized torus (SMT) are presented. The experiments are performed in the SMT BLAAMANN and employ the techniques of conditional averaging (CA) and cross‐correlation (CCF) of Langmuir probe data. By means of a detailed comparison of radio‐frequency and thermionic discharges, it is shown that general features of the observed large‐scale structures are independent of the discharge mechanism. Further, the observed large scale structures have a pronounced spatio‐temporal periodicity, which suggests a description as mode‐like. The conjectured relationship between the observed coherent structures and the inverse energy cascade is therefore questioned again. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)