Skip Navigation

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Azbaid, A. H.
Right arrow Articles by Bernal, J. M.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Azbaid, A. H.
Right arrow Articles by Bernal, J. M.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Journal of Electron Microscopy 49(1): 143-148 (2000)
© 2000 Oxford University Press

Electrostatic Russian quadruplet with high demagnification and minimum influence of geometric aberrations

Abdel H. Azbaid, Genoveva Martínez*, Alexander D. Dymnikov1 and Juan M. Bernal

Departamento de Física Aplicada III, Facultad de Física, Universidad Complutense E-28040 Madrid, Spain

*To whom correspondence should be addressed.E-mail: Genoveva{at}eucmax.sim.ucm.es

Based on a combined analytical and numerical modelling, a high-quality probe-forming system is proposed and developed. The Matrizant method is applied to minimize the beam spot size for a fixed beam current. For quadrupoles consisting of four metallic rods, the electric field inside of the quadruplet is computed using an accurate version of the boundary element method. The influence of the rod diameter on the beam spot size is studied for different emittances. The sensitivity of the system to energy spread and mechanical defects is also investigated.

Keywords     electrostatic devices, optimization, emittance, non-linear dynamics, geometric aberrations, quadrupole lens system

Received      4 October 1999, accepted 28 October 1999


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.