论文标题
高电流离子束的形成强烈不均匀静电场
High current ion beam formation with strongly inhomogeneous electrostatic field
论文作者
论文摘要
提出了一种开发能够形成具有先前无法访问强度的离子束的提取系统的新方法。使用不均匀加速场的使用可以显着提高离子束的形成效率。电场幅度的增加是通过仅更改电极的形状来实现的，而无需增加加速电压并降低互电极距离。比较是在新的提取系统和最常见的扁平传统系统之间进行的。新电极几何形状的使用可以增加在连续波模式下运行的强烈光束来源中电极的寿命。对于电子回旋共振离子源，结果证明了形成高质量离子束的可能性，电流密度超过$ 1 \：a/cm^2 $。
A new approach to the development of extraction systems capable of forming ion beams with previously inaccessible intensity is proposed. The use of inhomogeneous accelerating field allows to improve the ion beam formation efficiency significantly. The increase of electric field magnitude is achieved by changing the shape of the electrodes only, without increasing the accelerating voltage and decreasing the interelectrode distance. The comparison is made between a new extraction system and a flat traditional one, which is the most common. The use of a new electrode geometry allows to increase the lifetime of the electrodes in sources of intense beams operating in a continuous wave mode. For electron cyclotron resonance ion sources, results demonstrate the possibility to form high-quality ion beams with a current density of more than $1\:A/cm^2$.
