Development and characterization of diamond film and compound metal surface high current photocathodes

High current photocathodes operating in vacuum environments as high as 8/spl times/E-5 torr are being developed at Los Alamos for use in a new generation of linear induction accelerators. We report quantum efficiencies in wide bandgap semiconductors, pure metals and compound metal surface photocathode materials illuminated by ultraviolet laser radiation.