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The ELD
package is a suite of programs for the computation of the potential
distribution in axially symmetric electrostatic lenses and for the computation
of their electron optical properties.
Key Benefits
- Electrostatic lens can have up to 9 electrodes at different voltage.
Computation is done either for fixed potential of the electrodes or
for unit potential in turn on each of the electrodes in order to allow
the focusing by the lens while changing one of the electrode voltages.
- Very high accuracy of the axial potential can be obtained because
the mesh can have up to 200000 mesh points.
- Electron optical properties can be obtained for given set of the
electrode voltage or by finding a voltage for which given object (real
or virtual) is imaged to given image position. Aberration coefficients
can be expressed in a number of forms suitable for the user or
directly exported into MS EXCEL (.csv) file.
Symmetrical
unipotential lens with thin electrodes - equipotentials.
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