基于相对论修正的超快电子枪偏转扫描系统的理论研究

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名

邮箱

手机号码

标题

留言内容

验证码

Theoretical study of deflection-scan subsystem of femtosecond electron diffraction system based on relativistic correction

1.
Wuxi Institute of Commerce,Wuxi 214153,China;
2.
Xi’an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences,Xi’an 710068,China;
3.
Institute of Physics,Chinese Academy of Sciences,Beijing 100080,China

摘要: 对工作于扫描状态下的飞秒电子衍射系统电子枪偏转量的计算方法作了理论研究，讨论了超快电子脉冲的测量方法，比较了相对论效应对电子束的偏转量及对电子束脉冲宽度的计算结果的影响，并做了相应的数值计算。计算结果显示，在忽略了电场的边缘效应等因素后，电子束轴向速度的相对论修正与否对偏转距离和电子束脉冲宽度的影响分别达到61.4 mm和65 fs。研究结果对超快电子枪偏转扫描系统的设计、对超短电子脉冲宽度的测量方法，尤其是对超短电子脉冲宽度的测量过程中的同步实验具有一定的指导意义。
- 飞秒激光 /
- 超快电子衍射 /
- 偏转扫描系统 /
- 相对论修正
Abstract: The deflection-scan subsystem of the femtosecond electron diffraction system was theoretically studied and an exact solution of the deflection distance was got. The numerical calculations under relativistic correction and non-relativistic correction show that the difference of the deflection distances is about 61.4 mm, and the difference of the electron pulse widths is about 65 fs. The result can be useful for the design of the subsystem and the test of the time resolution of the ultra-fast electron diffraction system, especially for the synchronization process of the test.
- femtosecond laser /
- ultra-fast electron diffraction /
- deflection and scanning system /
- relativistic correction

点击查看大图