Experimental station for inelastic scattering spectroscopy of electronic excitations

Abstract

An experimental station for inelastic x-ray scattering spectroscopy (IXSS) of phonons and electronic excitation is being built on the undulator beamline of Sector 3 at the Advanced Photon Source. The subject of the present article is a description of the instrumentation for the spectroscopy of electronic excitations. The goal of this program is to provide users with the possibility to study IXSS in low- and middle-Z materials with an energy resolution from 1 eV (with a beam coming directly from the high-heat-load monochromator to the specimen) to 100 meV (with a second channel-cut monochromator) in the energy transfer range of 200 eV. The optical scheme of the station is described, and status of the station is reported.