TEMPERATURE-DEPENDENCE OF ELASTIC BACKSCATTERING OF ELECTRONS FROM POLYCRYSTALLINE SOLIDS

被引：22

作者：

DUDAREV, SL

WHELAN, MJ

机构：

[1] Department of Materials, University of Oxford, Oxford, OX1 3PH, Parks Road

来源：

SURFACE SCIENCE | 1994年 / 311卷 / 1-2期

关键词：

D O I：

10.1016/0039-6028(94)90474-X

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：

It is shown that the local periodicity in the atomic arrangement existing in a polycrystalline substance can cause a noticeable temperature dependence of the coefficient of elastic backscattering of electrons from a solid. Numerical solution of the transport equation shows that the effect is appreciable at oblique incidence (theta0 greater than or similar to 60-degrees, where theta0 is the angle of incidence). However, even at normal incidence the coefficient of elastic backscattering of electrons from a polycrystalline solid of medium atomic number can vary by approximately 25% between T = 20 K and T = 293 K at E almost-equal-to 1 keV.

引用

页码：L687 / L694

页数：8

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