Innovative research in electron microscopes, analysis of magnetic field distribution of some types of magnetic lenses by FEM

Holcakova, Regina; Marek, Martin

doi:10.1109/eeeic.2011.5874578

Cited by 5 publications

(3 citation statements)

References 1 publication

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“…The following figures ( 6) and ( 7) are shown the profiles of the pole pieces of the optimized magnetic field with µ (permeability) = 0 and NI = 96ampere-turns in two and three dimensions respectively To make comparison of the present optimum magnetic lens i.e. magnetic lens (1),with a standard Glaser's model [2] "magnetic lens (2)" as described in figure (8), that shows the axial magnetic flux density distribution B(z) with its first derivative for both lenses.…”

Section: B-pole Pieces Reconstructionmentioning

confidence: 99%

“…The database is composed of systems created by a `not-so-local' optimization algorithm, and a collection of previously well-designed systems [6]. More recently Ali has introduced an expert system to design two electrostatic lenses column by mixing dynamic programming and AI techniques [7].Regina Holčáková and Martin Marek have shown the simulation of magnetic field distribution of some types of magnetic lenses in software Ansys with the employment of results of magnetic measurements [8].…”

Section: Introductionmentioning

confidence: 99%

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2013

IJCSA

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This work shows expert system of symmetrical single magnetic lens used in focused ion beam optical system. Java expert system shell(JESS) programming is proposed to build the intelligent agent "MOPTION"for getting an optimum magnetic flux density , and calculate the ion optical trajectory. The combination of such rule based engine and SIMION 8.1 has configured the reconstruction process and compiled the data retrieved by the proposed expert system agent to implement the pole-pieces reconstruction for lens design. The pole pieces reconstruction has been resulted in 3D graph , and under the infinite magnification conditions of the optical path, aberration (spherical / chromatic and total) disks diameters have been obtained and got the values (0.03,0.13 and 0.133) micron (µm) respectively.

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Section: B-pole Pieces Reconstructionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Untitled

2013

IJCSA

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“…In 1984, Lencová introduced software similar to that of Munro to deal with additional features of a relatively wide analyzed area for magnetic lenses. A numerous of software and simulation programs in electron optics have been presented such as; SOFEM [4], PBO Lab [5], SPOC programs [6], Beam Optics Analysis (BOA) [7], SIMION-7 version [8], MULTIMAG program [9], Electron Optical Design "EOD" [10], Charged Particle Optics "CPO" programs [11], "Focus" software [12], SIMION-8 version [13], "MEBS" software [14], OmniTrak software [15], and ANSYS software [16].…”

Section: Introduction 11 Backgroundmentioning

confidence: 99%

Recent Development-2 of CADTEL Software: The Optimum Conditions of Scherzer Imaging in the Electron Magnetic Lenses

Hasan

Obaid

Erhayief

2022

eijs

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CADTEL software was developed to provide the simplest and most versatile computing resource that a wide range of skilled researchers and designers can use. In this paper, a development on this program, relying on sixteen mathematical models, produced a new version of CADTEL software package which focuses on the optimum conditions of Scherzer imaging for round electron magnetic lenses.. These models depend on synthesis procedure which is mainly designed to work with the inverse design problem, and represent the axial magnetic flux density of desirable electron magnetic lens which can be proposed or selected , using the four (zero, low, high, infinite) magnification states. The program provides the freedom of selecting multiple models and changing its variables (which appear on the home page), in addition to providing facilities for numerous proposed magnetic lens. The objective properties calculated in the program were used to compute and plot the optimum conditions for Scherzer imaging The CADTEL software was written in Visual Basic – 6, in an easy-to-use mode, even for a beginner computer user. The results of the analysis clearly show that there is an excellent equivalent calculation which could be obtained for the same lens from CADTEL software when evaluated with other counterpart software.

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Theoretical study of the aberrations for the single-gap magnetic lens

Al-Azawy¹

2022

J Opt

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Innovative research in electron microscopes, analysis of magnetic field distribution of some types of magnetic lenses by FEM

Cited by 5 publications

References 1 publication

Untitled

Untitled

Recent Development-2 of CADTEL Software: The Optimum Conditions of Scherzer Imaging in the Electron Magnetic Lenses

Theoretical study of the aberrations for the single-gap magnetic lens

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