| Issue |
Eur. Phys. J. AP
Volume 17, Number 3, March 2002
|
|
|---|---|---|
| Page(s) | 243 - 245 | |
| Section | Instrumentation and Metrology | |
| DOI | https://doi.org/10.1051/epjap:2002018 | |
| Published online | 15 March 2002 | |
https://doi.org/10.1051/epjap:2002018
Iron-free objective lenses II
Department of Physics, Assiut University, Assiut, Egypt
Corresponding author: amir@aun.eun.eg
Received:
13
July
2001
Accepted:
20
October
2001
Published online: 15 March 2002
The main factors limit the field of the magnetic lenses are the current density σ and the accelerating voltage Vr. Optical properties such as chromatic and spherical aberration have been studied in terms of σ and Vr. Values of the other aberration coefficients for the optimum lens size corresponding to the desired minimum aberration are estimated.
PACS: 41 – Electromagnetism; electron and ion optics
© EDP Sciences, 2002
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