Hexapole/Sextupole for Chromatic Aberration (Cc) Corrections
- Practical Electron Microscopy and Database -
- An Online Book -


This book (Practical Electron Microscopy and Database) is a reference for TEM and SEM students, operators, engineers, technicians, managers, and researchers.


Corrections of spherical aberration and off-axial coma have been recently used for improving the spatial resolution of TEM imaging. However, these corrections cannot further improve the resolution when reaching 0.5 Å at voltages ≤ 200 kV due to chromatic aberration. Fortunately, the chromatic aberration can decrease significantly by employing a monochromator or be corrected by crossed electric and magnetic quadrupole elements. In these setups, their electric and magnetic forces compensate each other for the electrons with nominal energies. Up to now, the use of a monochromator and a hexapole aplanator is most promising and holds the chromatic aberration to a minimum and within acceptable limits.




The book author (Dr. Liao) welcomes your comments, suggestions, and corrections, please click here for submission. You can click How to Cite This Book to cite this book. If you let Dr. Liao know once you have cited this book, the brief information of your publication will appear on the “Times Cited” page. This appearance can help advertise your publication.

Copyright (C) 2006 GlobalSino, All Rights Reserved