基于加速器的皮秒时间分辨率和纳米空间分辨率单次激发超快透射电子显微镜
Accelerator-based Single-shot Ultrafast Transmission Electron Microscope with Picosecond Temporal Resolution and Nanometer Spatial Resolution
摘要：
我们提出了一种基于加速器的超快透射电子显微镜（u-TEM）的可行性研究，能够在一个单一的拍摄同时皮秒的时间分辨率和纳米空间分辨率的全场图像。我们研究了与u-TEM性能相关的关键物理，并讨论了u-TEM实际实现的主要挑战以及可能的解决方案。u-TEM的可行性，通过使用现实的电子束参数的模拟确认。我们预计，u-TEM的产品的时间和空间分辨率超过$10^{-19}~$ m*s将开辟新的机会，在超快的时间和超小的空间尺度探测物质。
英文摘要：
We present feasibility study of an accelerator-based ultrafast transmission electron microscope (u-TEM) capable of producing a full field image in a single-shot with simultaneous picosecond temporal resolution and nanometer spatial resolution. We study key physics related to performance of u-TEMs, and discuss major challenges as well as possible solutions for practical realization of u-TEMs. The feasibility of u-TEMs is confirmed through simulations using realistic electron beam parameters. We anticipate that u-TEMs with a product of temporal and spatial resolution beyond $10^{-19}~$m*s will open up new opportunities in probing matter at ultrafast temporal and ultrasmall spatial scales.
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