Eur. Phys. J. AP
Volume 17, Number 3, March 2002
|Page(s)||243 - 245|
|Section||Instrumentation and Metrology|
|Published online||15 March 2002|
Iron-free objective lenses II
Department of Physics, Assiut University, Assiut, Egypt
Corresponding author: email@example.com
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
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.