摘要
根据低杂波驱动电流的准线性理论，利用二维Ｆｏｋｋｅｒ－Ｐｌａｎｋ方程模拟程序，求出速度空间扩散的驱动电流。考虑快电子的径向扩散效应对驱动电流的影响，对原有程序加以完善，并对ＨＴ－７、ＨＴ－６Ｍ装置进行了大量模拟计算。结果表明，考虑径向扩散后，原有的驱动电流分布变平展宽，并且变得光滑，同时驱动电流明显减小，驱动效率降低。另外，对于不同的径向扩散系数，电流密度的分布也有较大差异。
おccording to the quasilinear theory of lower hybrid current drive (LHCD), the velocity diffussion driven current was obtained by using a twodimensional FokkerPlanck equation code. The effect of fast electron radial diffusion on current drive is taken into account to optimize the code. A plenty of LHCD simulation about the HT7 and the HT6M tokamak has been done using the improved code. The results manifest that the distribution of driven current flattens, broadens and smoothes, and both the driven current and current drive efficiency decrease significantly after the radial diffusion is taken into account. In addition, the distributions of current density show obvious difference for different radial diffusion coefficients.
出处
《核聚变与等离子体物理》
EI
CAS
CSCD
北大核心
1998年第3期44-50,共7页
Nuclear Fusion and Plasma Physics
