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Iron-free objective lenses II

Published online by Cambridge University Press:  15 March 2002

A. S.A. Alamir
A. S.A. Alamir*
Affiliation:
Department of Physics, Assiut University, Assiut, Egypt
*
amir@aun.eun.eg
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Abstract

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.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 17 , Issue 3 , March 2002 , pp. 243 - 245
Copyright
© EDP Sciences, 2002

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References

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