Inelastic mean free path, surface excitation parameter, and differential surface excitation parameter in Au for 300-3000 eV electrons

被引：3

作者：

Nagatomi, T. ^{[1
]}

Goto, K. ^{[2
]}

机构：

[1] Osaka Univ, Grad Sch Engn, Dept Mat & Life Sci, Suita, Osaka 5650871, Japan

[2] Natl Inst Adv Ind Sci & Technol, Moriyama Ku, Nagoya, Aichi 4638560, Japan

来源：

APPLIED SURFACE SCIENCE | 2009年 / 256卷 / 04期

关键词：

Reflection electron energy loss spectroscopy; Inelastic mean free path; Surface excitation parameter; Bulk excitation; Surface excitation; ENERGY-LOSS FUNCTIONS; OXYGEN-ADSORBED SI(111); ELEMENTAL SOLIDS; SPECTROSCOPY; REFLECTION; NI; IMFP; AG; GE; SI;

D O I：

10.1016/j.apsusc.2009.05.069

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

An analytical approach for simultaneously determining an inelastic mean free path (IMFP), a surface excitation parameter (SEP) and a differential SEP (DSEP) with absolute units was applied for the analysis of absolutely measured reflection electron energy loss spectra for Au. The IMFP, SEP and DSEP in Au for 300-3000 eV electrons are successfully obtained. The obtained DSEPs show a reasonable agreement with those theoretically calculated. The present SEPs were compared with those calculated by several empirical equations, revealing that the present SEPs are close to those calculated using the Oswald's equation. The IMFPs for Au determined by the present analysis were compared with those calculated by the TPP-2M predictive equation, revealing that the present IMFPs are in fairly good agreement with those calculated by the TPP-2M equation. The results confirmed that the present approach is effective for experimentally determining the SEP, DSEP, and IMFP for electrons in solids. (C) 2009 Elsevier B. V. All rights reserved.

引用

页码：1200 / 1204

页数：5

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