计算物理 ›› 1999, Vol. 16 ›› Issue (1): 17-24.

• 论文 • 上一篇    下一篇

时间分辨电子显微镜的数值模拟

李淑红, 牛憨笨   

  1. 中国科学院西安光学精密机械研究所光电子部, 710068
  • 收稿日期:1997-09-23 出版日期:1999-01-25 发布日期:1999-01-25
  • 作者简介:李淑红,女,30,助研,博士,西安80信箱4分箱,710068
  • 基金资助:
    国家自然科学基金资助项目

Numerical simulation of a time resolved electron microscope

Li Shuhong, Niu Hanben   

  1. Xi'an Institute of Optics & Precision Mechanics, Academia Sinica 710068
  • Received:1997-09-23 Online:1999-01-25 Published:1999-01-25

摘要: 对时间分辨电子显微镜进行了数值模拟。通过求解从样品透射出来的电子在静态磁场和动态电场的混合场中的运动,评价时间分辨电子显微镜的动态时空特性。根据该数值模拟,时间分辨电子显微镜能够在荧光屏上获得样品在不同时刻的6幅显微分幅图像。

关键词: 时间分辨电子显微镜, 分幅图象数, 值模拟

Abstract: The simulation of a time resolved electron microscope is discussed.Temporal resolution and spatial resolution power are evaluated by computing the motion of transmission eletrons emitted from the sample in the combination of static magnetic field and dynamic electric field.The design methods,including the calculation of magnetic field,dynamic electric magnetic field,electron trajectory tracing and spatial and temporal spread functions,are also involved.The simulation demonstrates that 6 framing images with the size of φ=10mm,temporal resolution of 100ps and spatial resolution of 100Å have been achieved in the time resolved electron microscope.

Key words: time resolved electron microscope, framing images, numerical simulation

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