Mapping electromagnetic fields structure in plasma using a spin polarized electron beam

X. Y. An, M. Chen, J. X. Li, S. M. Weng, F. He, Z. M. Sheng, J. Zhang

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We propose a scheme to mapping electromagnetic field structure in plasma by using a spin polarized relativistic electron beam. Especially by using Particle-in-Cell (PIC) and spin tracing simulations, we have successfully reconstructed a plasma wakefield from the spin evolution of a transmitted electron beam. Electron trajectories of the probe beam are obtained from PIC simulations, and the spin evolutions during the beam propagating through the fields are calculated by a spin tracing code. The reconstructed fields illustrate the main characters of the original fields, which demonstrates the feasibility of field detection by use of spin polarized relativistic electron beams.

Original languageEnglish
Article number123106
Number of pages11
JournalPhysics of Plasmas
Issue number12
Publication statusPublished - 13 Dec 2019


  • electromagnetic field structure mapping
  • electron trajectories
  • electron beams
  • spin tracing

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