On the instrumental resolution in X-ray reflectivity experiments

被引：12

作者：

Sentenac, D ^{[1
]}

Shalaginov, AN ^{[1
]}

Fera, A ^{[1
]}

de Jeu, WH ^{[1
]}

机构：

[1] FOM, Inst Atom & Mol Phys, NL-1098 SJ Amsterdam, Netherlands

来源：

JOURNAL OF APPLIED CRYSTALLOGRAPHY | 2000年 / 33卷

关键词：

D O I：

10.1107/S0021889899014272

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A general method to describe the instrumental resolution function for grazing-angle X-ray scattering experiments is presented. A resolution function R is introduced as the Gaussian joint-distribution function of the (interdependent) random deviation q' associated with the wavevector transfer q. Useful expressions for the mean square values of q' are derived for some common scattering geometries, such as rocking scans, and scans out of the plane of incidence. The mean square values related to the incident beam dispersion and the detector acceptance angles are included in the treatment of R. As an example, R is incorporated in the calculation of the diffuse scattering from freestanding smectic films within the framework of the first Born approximation and the main resolution effects are discussed.

引用

页码：130 / 136

页数：7

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