تصميم عدسة الكترونية عديمة التشويه و الدوران

الملخص EN

In this work, the doublet project magnetic lens with different pole pieces has been designed, which is consists of two lenses; one is of a single cylindrical pole piece and the other of a double spherical pole piece .

The radial and spiral distortions have been corrected by using this lens at low and high magnification regions , after the magnetic field has been computed .