Geometrical Parameters Improvement of Snorkel Type Magnetic Lens Using FEMM and MELOP Programs
Keywords:
Snorkel magnetic lens, Lenses Geometrical parameters, Axial magnetic field distribution, Finite element method, Objective focal propertiesAbstract
A systematic study to improve optical and magnetic properties of snorkel-type magnetic lens using (FEMM) program for calculating axial magnetic field distribution using Finite Element Method (FEM) and using (MELOP) program for calculating objective focal properties of electron lenses. Two programs (FEMM & MELOP) have achieved evident success in studying, improving, and developing both magnetic and optical properties of snorkel-type magnetic electronic lenses by efficiently controlling the change of geometric parameters of these lenses.
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