Correction of Distortion Aberration in Electron Magnetic Lenses

International Journal of Applied Physics
© 2016 by SSRG - IJAP Journal
Volume 3 Issue 2
Year of Publication : 2016
Authors : Talib Mohsen Abbas

pdf
How to Cite?

Talib Mohsen Abbas, "Correction of Distortion Aberration in Electron Magnetic Lenses," SSRG International Journal of Applied Physics, vol. 3,  no. 2, pp. 1-5, 2016. Crossref, https://doi.org/10.14445/23500301/IJAP-V3I3P101

Abstract:

In this research, a theoretical investigation had been done to study and correct distortion aberration which happened in electron magnetic lenses while it is used as projector lenses in transmission electron microscope. In this study, inverse design had been used MATLAB environment and by representing the axial magnetic field for doublet magnetic lens with axial magnetic function as a target function.

Keywords:

Electron optics , Electron magnetic lens , Doublet magnetic lens.

References:

[1] Tsuno, K. and Harada Y. (1981b) "Elimination of Spiral Distortion Electron in Microscopy using an Asymmetrical Triple Polepiece Lens", Phys. E:Sci. Instrum., 14,955-960.
[2] Al-Obadi, H N. (1991) "Design of Electromagnetic Lenses ". M.Sc. Thesis. University of Al-Mustansiriya, Iraq, Baghdad.
[3] Al-Saady, A K. (1996). "Computations on The Properties of Magnetic Doublet Lenses for The Transmission Electron Microscope ". Ph.D. Thesis.University of Al- Mustansiriya, Iraq, Baghdad.
[4] Zain-Alabdeen F. S. (1997). "Rotation an Distortion free Spherical Triple Polepiece projector Lenses ". M.Sc. Thesis. University of Al- Mustansiriya, Iraq, Baghdad.
[5] Al-Shummary, B. A. (2002) "A Study of Distortion for The Projector Lensesin The Transmission Electron Microscope ". M.Sc. Thesis. University of Babylon, Iraq, Babylon.
[6] Rashid M. H. and Malik C. (2010) "New Magnetic Einzel Lens and its Beam optical Features ", Proc. Cyclotrons, Lanzhou, China
[7] Rashid M. H. and Chakrabarty A. (2013) "Beam Optical Simulation in Proposed Magnetic Einzel lens ", Proc. Cyclotrons, Vancouver,Canada.
[8] Szilagyi, M. (1988) "Electron and Ion Optics", Plenum Press: New York.
[9] El-Kareh, A. B. and El-Kareh, J. C. (1970) "Electron Beams Lenses and Optics", vol. 1 and 2, Academic Press: New York and London.