ENERGY-DISTRIBUTIONS OF ZR O/W SCHOTTKY ELECTRON-EMISSION/

The energy distributions of electron emission from a Schottky emitter have been studied at tip temperatures from 1450 to 1800 K and angular current densities from 0.1 to 240 mu A/sr. We have observed broadening of the energy distribution, with increase of angular current density and decrease of tip temperature, from 0.4 to 1.32 eV resulting from el ectron tunneling and electron-electron interaction. Good agreement bet ween the experimental results and predictions from Monte Carlo simulat ion of the emission process is observed. (C) 1997 American Institute o f Physics.