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Modulating Mathematical Model to Investigate Doublet Magnetic Lens

Author : Ali Hadi-Al. Batat, Hussain S. Hasan, Saadi Raheem Abbas and Mohammed Jawad Yaseen

Pages : 1337-1342
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In the current research a new mathematical target function has been introduced to represent the field distribution of
the doublet magnetic electron lens. As a common point of view, doublet magnetic electron lenses used in electron
optical device to obtain rotation and distortion free images in the first and/or second loop. Design of this instrument
has been investigated under the effect of the half half-width for the field distribution which is considered as a main
effective optimization parameter including in the target function. Different values of this parameter have been
chosen to simulate the electron optical device under some constraints and transformations. Rotation and radial
distortion free doublet lens has been achieved. Also, rotation and distortion (radial and spiral) free images may be
obtained at a very specific value of the optimization parameter taken under considerations.

Keywords: Electron optics, Doublet Magnetic Lenses, Projector properties, Distortion.

Article published in International Journal of Current Engineering and Technology, Vol.6, No.4 (Aug-2016)

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