New hybrid model for three electrodes gun was developed. It was called as Equivalent Cylinder Model (ECM). It allows to find field distribution and its derivatives analytically and gives useful information about electron gun paraxial properties as well as nonparaxial ones. The aberrations coefficients dependence on bias values was calculated. Current density radial distributions are discussed briefly. This model can be useful for design of devices working under Koehler mode.

Date Published: 1 April 2003
PDF: 10 pages
Proc. SPIE 5025, Fifth Seminar on Problems of Theoretical and Applied Electron and Ion Optics, (1 April 2003); doi: 10.1117/12.497620

Published in SPIE Proceedings Vol. 5025:
Fifth Seminar on Problems of Theoretical and Applied Electron and Ion Optics
Anatoly M. Filachev, Editor(s)