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Aberration theory for wide electron beam focusing having curvilineal optical axis in electro-static and magnetic imaging systems

  • Weiqi Jin*
  • , Liwei Zhou
  • , Guoqiang Ni
  • *Corresponding author for this work
  • Beijing Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

Based on the generalized theory of wide electron beam focusing, an aberration theory for wide electron beam focusing with curvilineal optical axis in electrostatic and magnetic imaging systems has been studied using the rotational and non-orthogonal curvilineal coordinate systems. By defining the integration function, all aberration coefficients of the second-order geometrical aberration, the principal trajectory chromatic aberration and curvilineal paraxial trajectory chromatic aberration are given. The results of this paper have been shown to be convenient for analysis and computer processing.

Original languageEnglish
Pages (from-to)271-277
Number of pages7
JournalBeijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology
Volume15
Issue number3
Publication statusPublished - 1995

Keywords

  • Aberration
  • Curvili- neal coordinates/cathode lenses
  • Electromagnetic lenses
  • Electron focusing
  • Electron optics

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