Ultrahigh-vacuum system for surface studies using high-energy ion scattering and x-ray photoemission spectroscopy

Abstract

We describe a new ultrahigh-vacuum facility which is being used for studies of solid surfaces. The target chamber is attached via a differentially pumped beamline to a 2-MV Van de Graaff accelerator, and includes: (1) instrumentation for high-energy ion backscattering and channeling studies and nuclear reaction analysis, (2) a 100-mm radius hemispherical analyzer for photoemission studies, and (3) low-energy electron diffraction (LEED) optics.