The results show that beam divergence of the system depends mainly on the extraction perveance and voltage ratio, and a minimum beam divergence can be obtained under optimum conditions.
结果展示出引出束光学主要取决于引出导流系数和电势分布，在一定条件下可获得发散度小的离子束。
2
The problem how to select optimum of signal-to-noise ratio and laser beam divergence for laser range-finder is studied.
研讨激光测距仪的信噪比和激光发散角如何选取最佳值的问题。
3
The effects of swirl number of primary swirler and radial swirler, area ratio and sleeve divergence angle on the cold flow field of double swirl air intake were investigated.