Description and performance of a high resolution electron spectrometer

Abstract

The description of a high resolution electron spectrometer comprising an electron gun, electrostatic lenses, a 127 degrees cylindrical monochromator and analyser, and a collision chamber with rotatable exit slit, is presented. Its performance is illustrated by a neon energy loss spectrum and transmission measurements of helium and neon resonances. An analysis of these resonances is also carried out, and values of their energy widths ( Gamma ) and phase shifts ( delta l) are determined.