Study of Improved Confinement Mode of Tokamak and Energy Transport near Plasma Edge

由剪切极向流引起的托卡马克等离子体湍流的稳定作用对改进托卡马克的约束具有重要意义。研究了等离子体边缘离子轨道损失和湍流雷诺应力对极向等离子体流动的影响。这篇综述发表在《你》杂志上。等离子体与聚变研究70 146 1994。在托卡马克中，导流器结构通常用于抑制杂质和H模跃迁。离子轨道损失是产生径向电场最可能的原因，而径向电场对H模跃迁至关重要。利用离子轨道漂移近似，研究了离子轨道损失区与径向电场的关系。将数值计算结果与简化模型的分析结果进行了比较，两者吻合较好。可以定量地评价径向电场对等离子体边缘离子轨道损失的影响。这些结果发表在《每日》杂志上。等离子体与核聚变研究70 882 1994，物理学报，63 4017 1994。

Stabilizing effect of turbulence in tokamak plasma due to the sheared poloidal flow is important for the improved confinement of tokamak. As the mechanism to induce the poloidal plasma flow, the effects of the ion orbit loss near plasma edge and the turbulent Reynolds stress are evaluated. This review was published in Jour. of Plasma and Fusion Research 70 146 1994.Divertor configuration is normally used in tokamak for suppression of impurities and H mode transition. Ion orbit loss is the most possible cause of radial electric field which is essential to H mode transition. The relation of ion orbit loss region and the radial electric field is studied by use of drift approximation of the ion orbit. The results of numerical calculation and analytical results of a simplified model are compared and they are in good agreement. It becomes possible to evaluate the effect of the radial electric field on the ion orbit loss near plasma edge quantitatively. These results were published in Jour.of Plasam and Fusion Research 70 882 1994 and Jour.Phys.Soc.Japan 63 4017 1994.