The influence of relaxation and nondipole effects on the intensity of X-ray photoelectron spectra

被引：0

作者：

Nefedov V.I. ^{[1
]}

Yarzhemsky V.G. ^{[1
]}

Trzhaskovskaya M.B. ^{[2
]}

机构：

[1] Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow 119991

[2] St. Petersburg Nuclear Physics Institute, Russian Academy of Sciences, Gatchina

来源：

Bulletin of the Russian Academy of Sciences: Physics | 2008年 / 72卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

Angular distribution - Photoelectrons - Photoionization - Surface analysis;

D O I：

10.3103/S1062873808040011

中图分类号：

学科分类号：

摘要：

The photoionization cross sections; dipole and nondipole parameters of the angular distribution of photoelectrons; and the spectroscopic factors for the main X-ray photoelectron lines, which are used in quantitative analysis of the surface and most of atoms, have been calculated. It is shown that consideration of nondipole effects leads to a significant (up to 10%) change in the photoelectron angular distribution. Therefore, neglect of nondipole transitions may lead to an error above 10% when MgKα and AlKα X-ray lines are used for surface analysis. Consideration of the spectroscopic factors leads to a decrease in the absolute line intensity by about 20%. Calculations showed that this value weakly depends on the atomic number and quantum shell numbers. © Allerton Press, Inc. 2008.

引用

页码：423 / 428

页数：5

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