Edge shadow projection method for measuring the brightness of electron guns.


The performance of an electron gun is evaluated in terms of the gun brightness. The brightness of an electron gun is typically measured by dividing the angular current density by the virtual source area. An electron gun brightness measurement system was constructed without an electron lens. The system consists of movable apertures (∅ 30, 50, 100, 200 μm), a… (More)
DOI: 10.1063/1.4974956