2D calculation of parasitic fields in misaligned multipole electron-optical systems
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F23%3APU149071" target="_blank" >RIV/00216305:26210/23:PU149071 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.ultramic.2023.113825" target="_blank" >https://doi.org/10.1016/j.ultramic.2023.113825</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ultramic.2023.113825" target="_blank" >10.1016/j.ultramic.2023.113825</a>
Alternative languages
Result language
angličtina
Original language name
2D calculation of parasitic fields in misaligned multipole electron-optical systems
Original language description
The effects of geometrical imperfections in electron-optical components are usually evaluated in 3D simulations. These calculations inherently take a long time, require a large amount of memory, and do not directly produce the necessary axial field functions. We present a 2D perturbation method to calculate parasitic fields in misaligned multipole systems. Our method is based on finding an equivalent potential perturbation, similarly to Sturrock's method, but does not rely on the potential being differentiable. The method is directly applicable to both electrostatic and non-saturated magnetic problems. It does not require any 3D data and it is fully compatible with existing finite element method codes such as EOD. The proposed method produces axial field functions with an accuracy of units to a few tens of percents, depending on the number of unperturbed multipole field components used and the geometry. The results can then be used, for instance, to determine the parasitic imaging aberrations of the misaligned optical system using standard methods, in order to evaluate the effect of mechanical design tolerances.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
21100 - Other engineering and technologies
Result continuities
Project
—
Continuities
—
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Ultramicroscopy
ISSN
0304-3991
e-ISSN
1879-2723
Volume of the periodical
253
Issue of the periodical within the volume
November 2023
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
8
Pages from-to
1-8
UT code for WoS article
001061696400001
EID of the result in the Scopus database
2-s2.0-85167581509