Construction of database of effective energy-loss functions

摘要

Effective energy-loss functions for Al, Cu, Ag and Au were derived from the reflection electron energy-loss spectroscopy (REELS) spectra for 1 keV electrons using extended Landau theory. Features of the obtained effective energy-loss functions are close to those of optical surface energy-loss functions, revealing the significant contribution of the low energy loss below a few tens of electron-volts in the REELS spectrum for Cu, Ag and Au. The REELS spectra were reproduced using the newly derived effective energy-loss functions, leading to the confirmation that this type of database of the effective energy-loss function is very useful not only for more comprehensive understanding of the measured spectrum of surface electron spectroscopies but also for practical background subtraction in surface electron spectroscopy. Copyright (C) 2003 John Wiley Sons, Ltd. [References: 24]