The desired form of electron beams is generally obtained by the use of magnetic fields in coils by focalisation, deflection, and other. The beam form is also influenced, due to incomplete shielding, by the magnetic environment, ...
The desired form of electron beams is generally obtained by the use of magnetic fields in coils by focalisation, deflection, and other. The beam form is also influenced, due to incomplete shielding, by the magnetic environment, ...