Near atomically smooth alkali antimonide photocathode thin films

Antimonide Photocathode
DOI: 10.1063/1.4974363 Publication Date: 2017-01-24T16:13:53Z
ABSTRACT
Nano-roughness limits the emittance of electron beams that can be generated by high efficiency photocathodes, such as thermally reacted alkali antimonide thin films. However there is an urgent need for photocathodes produce order magnitude or more lower than present day systems in to increase transverse coherence width beam. In this paper we demonstrate a method producing cathodes with near atomic smoothness reproducibility.
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