Electron beam modeling and analyses of the electric field distribution and space charge effect

doi:10.1088/1674-1056/ac3d84

Abstract In electron beam technology, one of the critical focuses of research and development efforts is on improving the measurement of electron beam parameters. The parameters are closely related to the generation, emission, operation environment, and role of the electron beam and the corresponding medium. In this study, a field calculation method is proposed, and the electric field intensity distribution on the electron beam's cross-section is analyzed. The characteristics of beam diffusion caused by the space charge effect are investigated in simulation, and the obtained data are compared with the experiment. The simulation demonstrated that the cross-sectional electric field distribution is primarily affected by the electron beam current, current density distribution, and electron beam propagation speed.

Keywords: electron beam electric field distribution space charge effect

Received: 30 September 2021
Revised: 14 November 2021
Accepted manuscript online:

PACS:	41.75.-i	(Charged-particle beams)
	41.85.-p	(Beam optics)
	41.85.Ew	(Particle beam profile, beam intensity)

Fund: Project supported by CAST Innovation Fund (Grant No.CAST-BISEE2019-040).

Corresponding Authors: Quanlin Dong,E-mail:dongquanlin@buaa.edu.cn
E-mail: dongquanlin@buaa.edu.cn

About author: 2021-11-26

Cite this article:

Yueling Jiang(蒋越凌) and Quanlin Dong(董全林) Electron beam modeling and analyses of the electric field distribution and space charge effect 2022 Chin. Phys. B 31 054103

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