The extracted beam current depends on operating parameter of source, extractionvoltage and cathode material.
引出束流大小与源的工作参数、引出结构和电压以及阴极材料有关。
2
The results show that the extraction time and collision loss are decreased by increasing extractionvoltage, but the sputtering loss increases and collection ratio decreases.
模拟结果表明，增加引出电压可以缩短引出时间，降低碰撞损失，但是增加了溅射损失，使得收集率降低；
3
But the ion extraction time does not always decrease with the applied voltage.