Spontaneous Toroidal Flow and Impurity Hole in the High Ion Temperature Plasma on LHD

Spontaneous Toroidal Flow and Impurity Hole in the High Ion Temperature Plasma on LHD
复制标题

LHD高离子温等离子体中的自发环形流和杂质空穴

DOI:
10.13182/fst10-a10797
复制
发表时间:
2010
影响因子:
0.9
通讯作者:
O. Kaneko
O. Kaneko
中科院分区:
工程技术4区
文献类型:
--
作者:
M. Yoshinuma;K. Ida;M. Yokoyama;M. Osakabe;K. Nagaoka;S. Morita;M. Goto;N. Tamura;C. Suzuki;S. Yoshimura;H. Funaba;Y. Takeiri;K. Ikeda;K. Tsumori;O. Kaneko

文献摘要

参考文献

被引文献

相似文献

摘要 在大型螺旋装置(LHD)中,观察到由离子温度梯度和碳杂质的极端中空轮廓(称为“杂质孔”)驱动的自发环形流与离子温度梯度的增加相关。研究了径向电场和离子温度梯度驱动的自发环形流。正径向电场在等离子体边缘沿相反方向驱动自发流,并在磁轴附近沿同向驱动自发流。由离子温度梯度驱动的自发环形流的分量被清楚地观察到,并且预计将成为 LHD 中高离子温度放电中环形流的主要分量之一。对带有杂质孔的放电中碳杂质的输运分析表明,扩散系数较低,向外对流速度较慢,而新古典理论预测在小半径一半处为向内对流。
Abstract Spontaneous toroidal flow driven by ion temperature gradient and extreme hollow profile of carbon impurity (denoted as an “impurity hole”) is observed associated with the increase of ion temperature gradient in the large helical device (LHD). Spontaneous toroidal flows driven by radial electric field and ion temperature gradient are studied. The positive radial electric field drives spontaneous flow in the counterdirection at the plasma edge and in the codirection near the magnetic axis. The component of the spontaneous toroidal flow driven by ion temperature gradient is clearly observed and expected to be one of the dominant components of toroidal flows in the high-ion temperature discharges in LHD. The transport analysis of the carbon impurity in the discharge with impurity hole reveals a low diffusion coefficient and the outward convection velocity, whereas the inward convection is predicted by the neoclassical theory at half the minor radius.
DOI: 10.1088/0029-5515/49/6/062002
发表时间: 2009-05
期刊: Nuclear Fusion
影响因子: 3.3
作者:
M. Yoshinuma;K. Ida;M. Yokoyama;M. Osakabe;K. Nagaoka;S. Morita;M. Goto;N. Tamura;C. Suzuki-C.
通讯作者: M. Yoshinuma;K. Ida;M. Yokoyama;M. Osakabe;K. Nagaoka;S. Morita;M. Goto;N. Tamura;C. Suzuki-C.
Wendelstein 7-AS 中正常约束和高密度 H 模式放电的杂质输运模型
DOI: --
发表时间: 2003
期刊: Plasma Phys.Control.Fusion 45
影响因子: --
作者:
K.Ida;et al.
通讯作者: et al.
DOI: 10.1103/physrevlett.91.085003
发表时间: 2003-08-22
影响因子: 8.6
作者:
Ida, K;Shimozuma, T;Ohyabu, N
通讯作者: Ohyabu, N
K. Saito、S. Murakami、M. Osakabe、M.Nishimura、T.Seki、T.Ozaki 等。
DOI: --
发表时间: 2006
期刊: IAEA-CN-149, EX/P6-17 (IAEA Fusion Energy conference 2006)
影响因子: --
作者:
P.R. Goncharov;T. Ozaki;J.F. Lyon;S. Sudo and LHD Experimental Group;Study of High-energy Ion Tail Formation with Second Harmonic ICRF Heating and NBI in LHD
通讯作者: Study of High-energy Ion Tail Formation with Second Harmonic ICRF Heating and NBI in LHD
LHD 的杂质迁移研究
DOI: --
发表时间: 2007
期刊: Plasma and Fusion Research 2
影响因子: --
作者:
A.;Wakasa;M.Kojima;M. Yokoyama;奥 彬;Yu. IGITKHANOV
通讯作者: Yu. IGITKHANOV