Coherent structures in the edge turbulence of the CASTOR tokamak

被引:33
作者
Martines, E [1 ]
Hron, M
Stöckel, J
机构
[1] ENEA Fus, Consorzio RFX, EURATOM Assoc, Padua, Italy
[2] Acad Sci Czech Republ, Inst Plasma Phys, EURATOM Assoc, IPP CR, Prague, Czech Republic
关键词
D O I
10.1088/0741-3335/44/3/305
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
A two-dimensional array of electric probes placed on the poloidal plane has been inserted in the edge region of the CASTOR tokamak. The floating potential patterns measured by the probes show the presence of localized structures which are convected poloidally by the E x B plasma motion. The lifetime of these structures has been found to be large enough to allow them to complete several full poloidal rotations before dying away. Furthermore, the eddy turnover time of the plasma around the potential blobs is smaller than the lifetime, so that these structures can be called coherent.
引用
收藏
页码:351 / 359
页数:9
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