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 $1\:A/cm^2$.

中文翻译：

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强不均匀静电场的高电流离子束形成

提出了一种开发能够形成具有以前无法达到的强度的离子束的提取系统的新方法。使用非均匀加速场可以显着提高离子束形成效率。电场强度的增加仅通过改变电极的形状来实现，无需增加加速电压和减少电极间距离。比较是在新的提取系统和最常见的扁平传统提取系统之间进行的。使用新的电极几何形状可以增加在连续波模式下工作的强光束源中电极的寿命。对于电子回旋共振离子源，结果证明了形成电流密度超过 $1\:A/cm^2$ 的高质量离子束的可能性。