Transactions of China Electrotechnical Society  2022, Vol. 37 Issue (19): 5011-5020    DOI: 10.19595/j.cnki.1000-6753.tces.221464
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Review on Research and Development of Ultrafast Electron Diffraction
Song Yifang, Wang Jian, Liu Zhengzheng, Fan Kuanjun
School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan 430074 China

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Abstract  

Atomic motion and structural changes are the essences of chemical reactions and life processes in nature. Therefore, observing the atomic motion and structural evolution of the non-equilibrium state of matter at the atomic level in real time and space can profoundly explain the essence of these phenomena, link the microscopic dynamic process of matter with its physical and chemical characteristics, and create great opportunities for scientific breakthroughs. The characteristic time of the dynamic process at the atomic level is in the order of picosecond, femtosecond, and even attosecond. At present, only the pump-probe technique can achieve the temporal resolution of such anorder. Ultrafast electron diffraction uses electrons as the probe in the pump-probe technique. It has the advantages such as high elastic scattering cross section, low energy deposition, and low maintenance cost, and thus has achieved rapid development in the past decade. This paper summarizes the development of key technologies in ultrafast electron diffraction in recent years and looks forward to the development trend of the new generation of ultrafast electron diffraction.

Key wordsUltrafast science      ultrafast electron diffraction      space charge effect      THz-driven     
Received: 29 July 2022     
PACS: TM15  
  TL55  
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Song Yifang
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Fan Kuanjun
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Song Yifang,Wang Jian,Liu Zhengzheng等. Review on Research and Development of Ultrafast Electron Diffraction[J]. Transactions of China Electrotechnical Society, 2022, 37(19): 5011-5020.
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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.221464     OR     https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I19/5011
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