The results about the research on the characters of ion beam sputtering show that grid voltage and sputtering gas pressure have great influences on ion beam distribution and current.
溅射特性研究结果表明：屏极电压和溅射气压对离子束均匀性和束流密度影响显著；
2
This PIC simulating can be extended to gun with asymmetric construction such as grid-control gun and multiple beam gun etc.
这种三维粒子模拟可以扩展到非对称的电子枪的模拟，如橱控电子枪，多注电子枪等。
3
Using a new material, the transverse wave Angle beam probes in ultrasonic testing of welds for steel space grid structures with welded joints are made.