Acceleration of on-axis and ring-shaped electron beams in wakefields driven by Laguerre-Gaussian pulses

Zhang, Guo Bo and Chen, Min and Luo, Ji and Zeng, Ming and Yuan, Tao and Yu, Ji Ye and Ma, Yan Yun and Yu, Tong Pu and Yu, Lu Le and Weng, Su Ming and Sheng, Zheng Ming (2016) Acceleration of on-axis and ring-shaped electron beams in wakefields driven by Laguerre-Gaussian pulses. Journal of Applied Physics, 119 (10). 103101. ISSN 0021-8979 (https://doi.org/10.1063/1.4943419)

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Abstract

The acceleration of electron beams with multiple transverse structures in wakefields driven by Laguerre-Gaussian pulses has been studied through three-dimensional (3D) particle-in-cell simulations. Under different laser-plasma conditions, the wakefield shows different transverse structures. In general cases, the wakefield shows a donut-like structure and it accelerates the ring-shaped hollow electron beam. When a lower plasma density or a smaller laser spot size is used, besides the donut-like wakefield, a central bell-like wakefield can also be excited. The wake sets in the center of the donut-like wake. In this case, both a central on-axis electron beam and a ring-shaped electron beam are simultaneously accelerated. Further, reducing the plasma density or laser spot size leads to an on-axis electron beam acceleration only. The research is beneficial for some potential applications requiring special pulse beam structures, such as positron acceleration and collimation.

ORCID iDs

Zhang, Guo Bo, Chen, Min, Luo, Ji, Zeng, Ming, Yuan, Tao, Yu, Ji Ye, Ma, Yan Yun, Yu, Tong Pu, Yu, Lu Le, Weng, Su Ming and Sheng, Zheng Ming ORCID logoORCID: https://orcid.org/0000-0002-8823-9993;
  • Item type:Article
    ID code:56207
    Dates:
    Date
    Event
    9 March 2016
    Published
    9 March 2016
    Published Online
    25 February 2016
    Accepted
    Notes:This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Zhang, G. B., Chen, M., Luo, J., Zeng, M., Yuan, T., Yu, J. Y., ... Sheng, Z. M. (2016). Acceleration of on-axis and ring-shaped electron beams in wakefields driven by Laguerre-Gaussian pulses. Journal of Applied Physics, 119(10), [103101]. 10.1063/1.4943419 and may be found at http://scitation.aip.org/content/aip/journal/jap/119/10/10.1063/1.4943419
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:21 Apr 2016 10:05
    Last modified:11 Nov 2024 11:22
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/56207
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