Measuring the energy of the graphite π + σ plasmon peak

Abstract

AbstractWe examine the graphite plasmon loss structure in reflection electron energy loss spectroscopy (REELS) and XPS with respect to the issue of measuring the energy, Ep, of the π + σ plasmon peak. The two spectra differ in shape because they are based on different physical processes. In fact, a static core hole—leading to intrinsic (in addition to extrinsic) losses—exists only for XPS. We show that no single energy can be measured on the two spectra for the π + σ peak. Possible procedures to deal with the matter are considered. Copyright © 2006 John Wiley & Sons, Ltd.