Mesh refinement for finite-element field computations in electron optics

Anjam Khursheed

doi:10.1117/12.279391

25 September 1997 Mesh refinement for finite-element field computations in electron optics

Anjam Khursheed

Proceedings Volume 3155, Charged Particle Optics III; (1997) https://doi.org/10.1117/12.279391
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

This paper presents a structured mesh refinement technique for the finite element method in electron optics. The technique is based upon using equipotential and flux lines on a trial potential distribution to generate the refinement mesh. For rotationally symmetric electron lenses, the method provides greater continuity of the axial field distribution derivatives than other mesh refinement techniques. For three dimensional electrostatic structures, the results show that the structured mesh refinement method can be used to improve the accuracy of field computations at points close to curved metal boundaries.

Citation Download Citation

Anjam Khursheed "Mesh refinement for finite-element field computations in electron optics", Proc. SPIE 3155, Charged Particle Optics III, (25 September 1997); https://doi.org/10.1117/12.279391

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