Title of article
Ultimate performance of objective magnetic lens
Author/Authors
Alamir، نويسنده , , A.S.A.، نويسنده ,
Issue Information
دوماهنامه با شماره پیاپی سال 2004
Pages
6
From page
241
To page
246
Abstract
The current density σ as a limit technological factor affecting the aberrations of magnetic objective lenses, has been studied. A practical form of Tretnerʹs (optik 16 (1959) 155) aberration parameters, in terms of current density σ, have been suggested. Iron-free lenses were compared with ironpole-piece lenses.
Keywords
Objective magnetic lens , Spherical aberration , RESOLUTION , Chromatic aberration
Journal title
Ultramicroscopy
Serial Year
2004
Journal title
Ultramicroscopy
Record number
2156260
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