Taccogna F, Schneider R, Longo S, Capitelli M
Max-Planck Institute für Plasmaphysik, EURATOM Association, Wendelsteinstr 1, Greifswald, Germany.
Rev Sci Instrum. 2008 Feb;79(2 Pt 2):02B903. doi: 10.1063/1.2802565.
This contribution shows two important applications of the particle-in-cell/monte Carlo technique on ion sources: modeling of the Hall thruster SPT-100 for space propulsion and of the rf negative ion source for ITER neutral beam injection. In the first case translational degrees of freedom are involved, while in the second case inner degrees of freedom (vibrational levels) are excited. Computational results show how in both cases, plasma-wall and gas-wall interactions play a dominant role. These are secondary electron emission from the lateral ceramic wall of SPT-100 and electron capture from caesiated surfaces by positive ions and atoms in the rf negative ion source.
本文展示了粒子模拟/蒙特卡罗技术在离子源方面的两个重要应用：用于空间推进的霍尔推力器SPT - 100以及用于ITER中性束注入的射频负离子源的建模。在第一种情况下涉及平动自由度，而在第二种情况下内部自由度（振动能级）被激发。计算结果表明，在这两种情况下，等离子体 - 壁和气体 - 壁相互作用都起着主导作用。这些相互作用分别是SPT - 100横向陶瓷壁的二次电子发射以及射频负离子源中被铯化表面的正离子和原子捕获电子。
