论文标题
通过电子回旋共振离子源优化金属离子的产生
On optimization of the metal ion production by Electron Cyclotron Resonance Ion Sources
论文作者
论文摘要
三维NAM-ECRIS模型用于研究降低-PM电子回旋共振离子源中的金属离子产生。实验测量的提取离子电流可准确地使用模型复制。优化了将金属蒸气注入源中的参数。发现高方向通量的轴向注入允许将高电荷钙离子的提取离子电流增加1.5倍。电流增益的原因是血浆内部离子的内部屏障形成，从而提高了离子提取和生产效率。讨论了注入单含钙离子而不是原子的好处。
The three-dimensional NAM-ECRIS model is applied for studying the metal ion production in the DECRIS-PM Electron Cyclotron Resonance Ion Source. Experimentally measured extracted ion currents are accurately reproduced with the model. Parameters of the injection of metal vapors into the source are optimized. It is found that the axial injection of the highly directional fluxes allows increasing the extracted ion currents of the highly charged calcium ions by factor of 1.5. The reason for the gain in the currents is formation of internal barrier for the ions inside the plasma, which increase the ion extraction and production efficiency. Benefits of injecting the singly-charged calcium ions instead of atoms are discussed.
