Optimizing the Effectiveness of Magnetic Lenses by utilizing the Electron Optical Design (EOD) Software
Received: 17 August 2023 | Revised: 3 September 2023 | Accepted: 12 September 2023 | Online: 30 November 2023
Corresponding author: Rabab Shakor Ali
Abstract
This paper introduces a computational analysis that discusses an approach for optimal synthesis in the design of magnetic lenses, specifically focusing on the analytical method. A widely employed approach for magnetic lens design involves utilizing an analysis optimization procedure, which makes use of the finite element method and is supported by Munro programs. In this study, this approach has been employed to explore magnetic lenses using the Electron Optical Design (EOD) software. The study offers insights into the role of the air gap in magnetic lens design, highlighting its importance in optimizing objective and projector properties. The analysis reveals that variations in the air gap (S) significantly influence the performance of magnetic lenses. Decreasing the air gap when it is set to (3) leads to substantial improvements in objective optical properties and focal length. Conversely, increasing the air gap when it is set to (12) enlarges the half-width of the axial magnetic field while reducing the maximum magnetic field value. These findings underscore the importance of carefully optimizing the air gap to achieve desired lens performance. The focal length is determined using this input data and coefficients of aberration (spherical and chromatic) of the objective. The study focuses on the influence of a crucial geometric parameter, specifically the air gap (S), on both objective and projector properties. Its importance stems from its capability to pinpoint the suitable geometry for magnetic lenses, thereby facilitating their efficient application.
Keywords:
EOD, aberration, magnetic lens, optimizationDownloads
References
M. Mwita, J. Mbelwa, J. Agbinya, and A. E. Sam, "The Effect of Hyperparameter Optimization on the Estimation of Performance Metrics in Network Traffic Prediction using the Gradient Boosting Machine Model," Engineering, Technology & Applied Science Research, vol. 13, no. 3, pp. 10714–10720, Jun. 2023.
A. Kout, B. Bouaita, A. Beghriche, S. Labed, S. Chikhi, and E.-B. Bourennane, "A Hybrid Optimization Solution for UAV Network Routing," Engineering, Technology & Applied Science Research, vol. 13, no. 2, pp. 10270–10278, Apr. 2023.
B. Korich, A. Benaissa, B. Rabhi, and D. Bakria, "A Novel MPPT Design for a Partially Shaded PV System Using Spotted Hyena Optimization Algorithm," Engineering, Technology & Applied Science Research, vol. 11, no. 6, pp. 7776–7781, Dec. 2021.
X. Jiye, Aberration Theory in Electron and Ion Optics, 1st ed. Elsevier, 2023.
K. W. Urban et al., "Progress in atomic-resolution aberration corrected conventional transmission electron microscopy (CTEM)," Progress in Materials Science, vol. 133, Mar. 2023, Art. no. 101037.
Z. Li, R. Pestourie, J.-S. Park, Y.-W. Huang, S. G. Johnson, and F. Capasso, "Inverse design enables large-scale high-performance meta-optics reshaping virtual reality," Nature Communications, vol. 13, no. 1, May 2022, Art. no. 2409.
C. Arnold, "Fundamental Investigation of Electron-Optical Process Monitoring in Electron Beam Powder Bed Fusion," Ph.D. dissertation, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany, 2023.
K. M. Musa, S. M. A. Alazzawi, and S. Rushdi, "Declined focal length projection in air-gap difocal electromagnetic lenses," AIP Conference Proceedings, vol. 2787, no. 1, Jul. 2023, Art. no. 040004.
M. K. A. A.- Janan and R. Y. J. AL-Salih, "Design and study the effect of inner bore diameter on the magnetic and optical properties of the unipolar lens," Baghdad Science Journal, vol. 20, no. 3, pp. 0805–0805, Jun. 2023.
A. K. Ahmad and B. F. Abd-Alghane, "Design and analysis of the optical properties of electrostatic unipotential lens (einzel lens)," Journal of Optics, Oct. 2022.
A. A. Al-Azawy, "Theoretical study of the aberrations for the single-gap magnetic lens," Journal of Optics, vol. 52, no. 2, pp. 691–695, Jun. 2023.
H. S. Hasan, S. A. Obaid, and M. S. Erhayief, "Recent Development-2 of CADTEL Software: The Optimum Conditions of Scherzer Imaging in the Electron Magnetic Lenses," Iraqi Journal of Science, pp. 131–148, Jan. 2022.
S. J. Musa and T. M. Abbas, "Design and investigate the optical characteristics of single polepiece magnetics lenses," Materials Today: Proceedings, vol. 80, pp. 2307–2314, Jan. 2023.
M. Algozy, O. Sise, H. Algarni, and M. O. A. El Ghazaly, "Design and Simulations of an Electron-Optical Column Using Finite-Difference and Finite-Element Methods Combination," Journal of Nanoelectronics and Optoelectronics, vol. 17, no. 5, pp. 721–729, May 2022.
W. Kadhem, B. Naser, and T. Abbas, "Optimization of asymmetrical magnetic lenses with the aid of EOD program," International Journal of Engineering & Technology, vol. 7, no. 4, pp. 3591–3594, Nov. 2018.
B. Lencová and J. Zlámal, "A new program for the design of electron microscopes," Physics Procedia, vol. 1, no. 1, pp. 315–324, Aug. 2008.
H. Y. Ismaeel, R. Y. J. AL-Salih, and H. E. Jasim, "Effect of Outer Polepiece Shroud Geometry on Bipolar Lens and Studying its Properties," Tikrit Journal of Pure Science, vol. 27, no. 4, pp. 77–81, Nov. 2022.
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Copyright (c) 2023 Rabab Shakor Ali, Mohammed Abdullah Hussein, Rafa Younus Jasima Al-Salih
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