Blob/hole formation and zonal-flow generation in the edge plasma of the JET tokamak
Blob/hole formation and zonal-flow generation in the edge plasma of the JET tokamak
复制标题
JET 托卡马克边缘等离子体中的斑点/孔洞形成和层流生成
DOI:
10.1088/0029-5515/49/9/092002
复制
发表时间:
2009-09
期刊:
影响因子:
3.3
通讯作者:
Carlos Hidalgo
中科院分区:
文献类型:
--
作者:
Mike Stamp;Bruno Soares Goncalves;Carlos Silva;Volker Naulin;Jens Juul Rasmussen;Anders H. Nielsen;Wojtek Fundamenski;徐国盛;Sergei I. Krasheninnikov;J. Arturo Alonso;万宝年;Carlos Hidalgo
The first experimental evidence showing the connection between blob/hole formation and zonal-flow generation was obtained in the edge plasma of the JET tokamak. Holes as well as blobs are observed to be born in the edge shear layer, where zonal-flows shear off meso-scale coherent structures, leading to disconnection of positive and negative pressure perturbations. The newly formed blobs transport azimuthal momentum up the gradient of the azimuthal flow and drive the zonal-flow shear while moving outwards. During this process energy is transferred from the meso-scale coherent structures to the zonal flows via the turbulent Reynolds stress, resulting in nonlinear saturation of edge turbulence and suppression of meso-scale fluctuations. These findings carry significant implications for the mechanism of structure formation in magnetically confined plasma turbulence.
登录
查看更多内容
影响因子:
2.5
作者:
S. Krasheninnikov;D. D'Ippolito;J. Myra
通讯作者:
S. Krasheninnikov;D. D'Ippolito;J. Myra
影响因子:
1.6
作者:
G. Xu;B. Wan;W. Zhang
通讯作者:
G. Xu;B. Wan;W. Zhang
影响因子:
1.6
作者:
G. Xu;B. Wan;W. Zhang
通讯作者:
G. Xu;B. Wan;W. Zhang
影响因子:
2.9
作者:
Odd Erik Garcia;V. Naulin;A. Nielsen;J. J. Rasmussen-J.
通讯作者:
Odd Erik Garcia;V. Naulin;A. Nielsen;J. J. Rasmussen-J.
影响因子:
44.1
作者:
P. Terry
通讯作者:
P. Terry