A theoretical investigation for bi-gap magnetic lenses distortion

Ashraf alattar; Ali  Al-Azawy; Nibras  Ramadhan

doi:10.47758/ijnsn.v7i1.303

Ashraf alattar Physics/Department of Medical Physics/College of Science/ Al-Karkh University of science. Baghdad/ Iraq
Ali Al-Azawy Physics/Department of Medical Physics/College of Science/ Al-Karkh University of science. Baghdad/ Iraq
Nibras Ramadhan Dep. of Applied Physics Research and Technology, Industrial Materials Research and Technology Center, Ministry of higher education & scientific research، Scientific research commission, Baghdad. Iraq

DOI: https://doi.org/10.47758/ijnsn.v7i1.303

Keywords: Electron optics, magnetic lenses, Aberration, analytical design, beam projection

Abstract

A theoretical computational analysis was carried out to determine whether it is possible to create bi-gap magnetic lenses that do not generate spinning and have the least amount of distortion possible. The gap thickness S and the aperture diameter D are two ideal geometric variables that are essential to the operation of a novel type of function. The variable irritation of the imaging field, denoted by NI, is fixed to make assessment of optical qualities easier. On the other hand, the variables S and D are essential for magnetic lens design, which enables the acquisition of images that demonstrate rotation. By selecting the appropriate settings for the ratios between the aperture of the lens and its gap, the distortion amount that occurs may be limited.