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Research Paper | Physics Science | Iraq | Volume 6 Issue 2, February 2017
The Effect of Cross-Section Area of Electron Beam on the Aberration of Einzel Electrostatic Lens
Dr. Samir Khudhir Al-ani [2] | Nada Abdulfatah Khattab [2]
Abstract: A theoretical study by using computer model is presented by fitting an axial electrostatic potential distribution to polynomial function of fourth order from which the paraxial ray equation is solved to obtain the trajectory of particle that satisfy the suggested potential function. The distribution of the axial potential up or on the lens of length (22mm) has been carried out using Laplace equation by using Finite element method. , the results are obtained for Cs and Cc normalized in terms of the results showed low value of spherical and chromatic aberration comparing with other searches about ( 2.42) for spherical aberration and ( 0.03) of chromatic aberration, of this study showed small values of spherical and chromatic aberration, with values of area of which considered as ( 3mm2).
Keywords: Electron Optics, Einzel Lens, Electrostatic Lens, spherical aberrations, chromatic aberrations
Edition: Volume 6 Issue 2, February 2017,
Pages: 355 - 357
Similar Articles with Keyword 'Electron'
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Research Paper, Physics Science, Indonesia, Volume 10 Issue 6, June 2021
Pages: 730 - 734Fabrication of Bolus from Composite of Silicone Rubber (SR) - Copper (Cu) for Radiotherapy Application
Hanna Azmi Fathin | Heri Sutanto | Eko Hidayanto [3]
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Research Paper, Physics Science, Turkey, Volume 11 Issue 4, April 2022
Pages: 1210 - 1214Electronic and Structural Properties of Li1 - xKxMgN Half Heusler Alloy
Metin Aslan