Three-dimensional MHD equilibrium in the presence of bootstrap current for the Large Helical Device
Three-dimensional MHD equilibrium in the presence of bootstrap current for the Large Helical Device
复制标题
大型螺旋装置存在自举电流时的三维 MHD 平衡
DOI：
10.1088/0029-5515/32/9/i01
复制
发表时间：
1992
期刊：
影响因子：
3.3
通讯作者：
M. Wakatani
中科院分区：
文献类型：
--
作者：
Kojiro Watanabe;N. Nakajima;M. Okamoto;Y. Nakamura;M. Wakatani
研究了包含自举电流自洽的大螺旋装置的三维MHD平衡。自举电流的大小对LHD中的磁轴位置或沙弗拉诺夫位移很敏感，它与等离子体压力成正比，与旋转变换成反比。由于自举电流增强了旋转变换并减小了沙弗拉诺夫位移，因此自洽MHD平衡对于估计自举电流至关重要。对于体积平均为β β 1%的LHD等离子体，如果电子和离子在整个等离子体区域内都属于几乎无碰撞的1/ν区，则总自举电流超过100 kA。研究了垂直场、四极场和压力分布对自举电流的影响
Three-dimensional MHD equilibria including the bootstrap current self-consistently are studied for the Large Helical Device (LHD). The magnitude of the bootstrap current is sensitive to the magnetic axis position or the Shafranov shift in LHD, which is proportional to the plasma pressure and inversely proportional to the rotational transform. Since the bootstrap current enhances the rotational transform and reduces the Shafranov shift, the self-consistent MHD equilibrium is crucial for estimating the bootstrap current. The total bootstrap current exceeds 100 kA for LHD plasmas with volume averaged beta β 1% if both electrons and ions belong to the almost collisionless 1/ν regime in the whole plasma region. Effects of the vertical field, the quadrupole field and the pressure profile on the bootstrap current are also investigated
影响因子：
3.3
作者：
A. Gibson;T. Sekiguchi;K. Lackner;S. Bodner;R. Hancox
通讯作者：
A. Gibson;T. Sekiguchi;K. Lackner;S. Bodner;R. Hancox