Producing a brighter electron beams requires the smallest possible emittance from the cathode with the highest possible current. Several materials like ordered surface, single …
For the first time, photoemission of a spin-polarized electron beam from a gallium nitride (GaN) photocathode is observed and characterized. The spin polarization of the emitted …
Photoemission properties (quantum efficiency, spectral response, and lifetime) of various GaN based photocathodes are summarized, including p-doped samples in its hexagonal …