Title :
Calculations of fringing fields of a quadrupole doublet
Author :
Ueda, Masahiro ; Noda, Matu-tarow
Author_Institution :
Ehime University, Matsuyama, Ehime, Japan
fDate :
7/1/1973 12:00:00 AM
Abstract :
Fringing fields of a quadrupole doublet consisting of circular concave electrodes are calculated by solving the three-dimensional Laplace equation numerically. It is found that the

and θ components in cylindrical coordinates have negligible influence on the normalized fringing potential distributions within the available lens region.
Keywords :
Apertures; Boundary conditions; Cathodes; Electrodes; Electrons; Laplace equations; Lenses; Optical design; Testing; Vision defects;
Journal_Title :
Electron Devices, IEEE Transactions on
DOI :
10.1109/T-ED.1973.17723