›› 2014, Vol. 23 ›› Issue (12): 124209-124209.doi: 10.1088/1674-1056/23/12/124209

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Radio-frequency compressed electron pulse-width characterization by cross-correlation between electron bunches and laser-induced plasma

李静, 裴敏洁, 齐大龙, 齐迎朋, 杨岩, 孙真荣   

  1. State Key Laboratory of Precision Spectroscopy and Department of Physics, East China Normal University, Shanghai 200062, China
  • 收稿日期:2014-02-14 修回日期:2014-05-26 出版日期:2014-12-15 发布日期:2014-12-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11004060, 11027403, and 11304224) and the Shanghai Municipal Science and Technology Commission, China (Grant Nos. 10XD1401800, 09142200501, 09ZR1409300, 09JC1404700, and 10JC1404500).

Radio-frequency compressed electron pulse-width characterization by cross-correlation between electron bunches and laser-induced plasma

Li Jing (李静), Pei Min-Jie (裴敏洁), Qi Da-Long (齐大龙), Qi Ying-Peng (齐迎朋), Yang Yan (杨岩), Sun Zhen-Rong (孙真荣)   

  1. State Key Laboratory of Precision Spectroscopy and Department of Physics, East China Normal University, Shanghai 200062, China
  • Received:2014-02-14 Revised:2014-05-26 Online:2014-12-15 Published:2014-12-15
  • Contact: Sun Zhen-Rong E-mail:zrsun@phy.ecnu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11004060, 11027403, and 11304224) and the Shanghai Municipal Science and Technology Commission, China (Grant Nos. 10XD1401800, 09142200501, 09ZR1409300, 09JC1404700, and 10JC1404500).

摘要: A method is proposed to determine the temporal width of high-brightness radio-frequency compressed electron pulses based on cross-correlation technique involving electron bunches and laser-induced plasma. The temporal evolution of 2-dimensional transverse profile of ultrafast electron bunches repelled by the formed transient electric field of laser-induced plasma on a silver needle is investigated, and the pulse-width can be obtained by analyzing these time-dependent images. This approach can characterize radio-frequency compressed ultrafast electron bunches with picosecond or sub-picosecond timescale and up to 105 electron numbers.

关键词: radio-frequency compression, electron pulse-width, laser-induced plasma, ultrafast electron diffraction

Abstract: A method is proposed to determine the temporal width of high-brightness radio-frequency compressed electron pulses based on cross-correlation technique involving electron bunches and laser-induced plasma. The temporal evolution of 2-dimensional transverse profile of ultrafast electron bunches repelled by the formed transient electric field of laser-induced plasma on a silver needle is investigated, and the pulse-width can be obtained by analyzing these time-dependent images. This approach can characterize radio-frequency compressed ultrafast electron bunches with picosecond or sub-picosecond timescale and up to 105 electron numbers.

Key words: radio-frequency compression, electron pulse-width, laser-induced plasma, ultrafast electron diffraction

中图分类号:  (Ultrafast processes; optical pulse generation and pulse compression)

  • 42.65.Re
07.77.Ka (Charged-particle beam sources and detectors) 52.40.Mj (Particle beam interactions in plasmas) 61.05.J- (Electron diffraction and scattering)