| 电子脉冲在飞秒电子衍射系统中的传输特性 |
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| 引用本文： | 田进寿,赵宝升,吴建军,赵卫,侯洵,刘运全,张杰. 电子脉冲在飞秒电子衍射系统中的传输特性[J]. 物理学报, 2007, 56(1): 123-128 |
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| 作者姓名： | 田进寿 赵宝升 吴建军 赵卫 侯洵 刘运全 张杰 |
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| 作者单位： | 1. 中国科学院西安光学精密机械研究所瞬态光学与光子学国家重点实验室,西安,710068
2. 中国科学院物理研究所,北京,100080 |
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| 摘 要： | 优化设计了一套超快电子衍射系统.用轨迹追踪法讨论了光电子在阴极上有150 fs的时间弥散量，及其静态、动态特性(电子束斑、时间弥散、方位角、倾角)在超快电子衍射系统中的传输情况.用Monte Carlo方法对光电子的初始状态进行抽样、用有限差分法计算二维、三维空间电场分布，用有限元法计算磁场分布.
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| 关 键 词： | 时间弥散 空间弥散 偏转板 |
| 文章编号： | 1000-3290/2007/56(01)/0123-06 |
| 收稿时间： | 2005-11-28 |
| 修稿时间： | 2005-11-28 |
Transfer property of electron pulse in a femto-second electron diffraction system |
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| Tian Jin-Shou,Zhao Bao-Sheng,Wu Jian-Jun,Zhao Wei,Hou Xun,Liu Yun-Quan,Zhang Jie. Transfer property of electron pulse in a femto-second electron diffraction system[J]. Acta Physica Sinica, 2007, 56(1): 123-128 |
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| Authors: | Tian Jin-Shou Zhao Bao-Sheng Wu Jian-Jun Zhao Wei Hou Xun Liu Yun-Quan Zhang Jie |
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| Abstract: | An ultra-fast electron diffraction system has been designed. The static and dynamic characters of an electron pulse with 150 fs temporal dispersion are studied during its transmission in the whole ultra-fast electron diffraction system, including the size of the electron spot, temporal dispersion, distribution of azimuths and elevation angles. The initial status of the photoelectrons are put down by Monte Carlo method, both the two dimensional and three dimensional electric fields are calculated by finite difference method and the magnetic flux are calculated by finite element method. |
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| Keywords: | temporal dispersion spatial dispersion deflector |
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