中文摘要：

报道了HL-2A装置最新的实验结果,讨论并研究了超声分子束的注入位置对分子束在等离子体中的消融和穿透的影响,其中包括电离后的分子束粒子在磁场梯度作用和E×B漂移下的加速或减速及由此形成的冷通道效应.研究结果表明,磁场梯度和E×B漂移对于超声分子束的加料效果、消融和穿透有着重要的作用.强场侧注入可使电离后的电子和离子更深地进入等离子体芯部.这些研究对于更好地理解超声分子束与等离子体的相互作用和优化设计加料系统有一定作用。

英文摘要：

Fuelling and particle control are important topics for ITER physics.Because of the low efficiency of gas puffing and the high cost of pellet injection,other methods were explored in the last decades.A new method for plasma gas fueling,the pulsed supersonic molecular beam injection（SMBI） was successfully developed at Southwestern Institute of Physics in China and applied on HL-1M and HL-2A devices in recent years.SMBI possesses a great advantage over conventional gas puffing,mainly due to the higher instantaneous fueling intensity and speed,smaller spread of velocity and angular distribution of the particles than the latter.In this paper,we report the experiment results of the SMB injected from LFS and HFS in HL-2A device,the effect of Δ B on SMB penetration is considered.During SMB injection in Tokamak,there is a rapid movement of the ablation beam substance towards the outward major radius R direction.The favorable injection from the high field side in order to promote deeper fuel penetration can be obtained.The motion has been attributed to a vertical curvature and Δ B drift current induced inside the ionized ablated SMB particles by the 1 /R toroidal field variation.The uncompensated vertical drift current inside the weakly diamagnetic ablation particles will cause charge separation at the plasma edge.The resulting electrostatic field induces the E × B drift to the large R side of the torus.