New Simple Photoemission Electron Microscope with an Energy Filter

Abstract

  We have developed a new Wide Acceptance Angle Electrostatic Lens (WAAEL) and applied that as display-type electron energy analyser. Our present lens achieves ±60° (1π sr) acceptance angle and has a good focusing capability with 5-times magnifications. The relative energy resolution is typically from 2 to 5×10^-3 and depends on the emission area on the sample, as well as, on the diameter of exit aperture. Some preliminary results and discussions related to its energy resolution are shown.