Dynamic Scattering of X-Rays in a Periodic Layered Medium

被引：0

作者：

Blazhevich, S. V. ^{[1
]}

Gorlov, A. S. ^{[2
]}

Noskov, A. V. ^{[3
]}

Chuyeva, A. I. ^{[1
]}

机构：

[1] Belgorod State Natl Res Univ, Belgorod 308015, Russia

[2] Shukhov Belgorod State Technol Univ, Belgorod 308012, Russia

[3] Moscow Tech Univ Commun & Informat, Moscow 111024, Russia

来源：

JOURNAL OF SURFACE INVESTIGATION | 2024年 / 18卷 / 06期

关键词：

X-rays; dynamical diffraction; reflectivity; transmission coefficient; periodic layered medium;

D O I：

10.1134/S1027451024701684

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A dynamical theory of the reflection and transmission of X-rays through a layered periodic target with three different layers in the period is developed. Expressions are obtained that describe the parameters of dynamic scattering determining the reflection and absorption of X-rays. Expressions are derived for the coefficients of the reflection and transmission of X-rays through a periodic layered structure. It is shown that by changing the ratios of the layer thicknesses and the values of the dielectric susceptibility of the media in the layered structure, it is possible to increase significantly the reflectivity of X-rays in the vicinity of the Bragg frequency. When the middle layer has weakly absorbed X-rays, the effect of anomalous photoabsorption could occur, which is similar to the Bormann effect in a single crystal.

引用

页码：1662 / 1669

页数：8

共 50 条

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