论文部分内容阅读
电子光学已有五十多年的历史了,它主要是研究电子在电磁场作用下的聚焦成象性质。利用电子光学的原理,曾设计出了许多具有优良性能的电子束器件,例如电子显微镜示波管以及电视显像管等等。 随着近代物理对基本粒子的研究,电子光学又有了一新的领域,这就是粒子加速器。最初的粒子加速器,也是采用电子光学的方法设计的。即插叙电磁场对电子或其它荷电粒的作用采用几何光学的方法。把电场与磁场看成是一个透镜,把电子或其它荷电粒子的轨迹看作是光线。借助于几何光学的参量(如焦点,主点,节点等基点以及焦距,放大率等参量)来描述电磁场对电子或其它荷电粒子的作用。后来,随着加速器能量的不断提高,造价亦不断的提高,而且是惊人的提高。因
Electro-optics has more than 50 years of history, it is mainly to study the electron in the electromagnetic field focused imaging properties. Using the principle of electro-optics, many electron beam devices have been designed with excellent properties, such as electron microscope oscilloscopes and television picture tubes. With the study of basic physics in modern physics, there is a new field of electronic optics. This is the particle accelerator. The first particle accelerator, but also the use of electronic optics design. Plug the Syrian electromagnetic field on the role of electrons or other charge particles using the method of geometric optics. Think of an electric field and a magnetic field as a lens, taking the trajectory of electrons or other charged particles as light. The effect of the electromagnetic field on electrons or other charged particles is described by means of geometrical optics parameters (such as focal point, principal point, node basis points and parameters such as focal length, magnification). Later, with the continuous improvement of the energy of the accelerator, the cost was also continuously increased, which was astonishingly improved. because