摘要
X射线管的焦点是通过静电场对电子束的会聚作用而形成的。焦点的尺寸大小及聚焦质量直接影响X射线机透视、摄影图像的清晰度;同时,焦点的尺寸大小与X射线管的功率有着密切的关系。本文通过一系列的实验,重点讨论如何设计X射线管的聚集系统来实现用户需要的焦点尺寸。
The X-Ray tube focal spot is obtained by convergence of static field on the electron beams.The focal spot sizes can immediately influence picture definition when X-ray machine carry through clairvoyance and photography. At the same time, the size of the focal spot is related with the tube power. The article discusses how to design X-ray focusing system to obtain eligible focal spot size by a series of experiments.
出处
《真空电子技术》
2003年第6期54-57,共4页
Vacuum Electronics
关键词
聚焦
X射线焦点
电子束
静电场
阴极头
Focus
X-ray focal spot
Electron beam
Static field
Cathode head
