金属学报（英文版）
金屬學報（英文版）
금속학보（영문판）
ACTA METALLURGICA SINICA (ENGLISH LETTERS)
2005年
3期
217-222
,共6页
effective energy loss function%Monte Carlo simulation%extended Landau approach%reflection electron energy loss spectroscopy%aluminum
The effective energy loss functions for Al have been derived from differential inverse inelastic mean free path based on the extended Landau approach. It has been revealed that the effective energy loss function is very close in value to the theoretical surface energy loss function in the lower energy loss region but gradually approaches the theoretical bulk energy loss function in the higher energy loss region. Moreover, the intensity corresponding to surface excitation in effective energy loss functions decreases with the increase of primary electron energy. These facts show that the present effective energy loss function describes not only surface excitation but also bulk excitation. At last, REELS spectra simulated by Monte Carlo method based on use of the effective energy loss functions has reproduced the experimental REELS spectra with considerable success.
