Using a plane wave approximation in simulation of radiation distribution in an X-ray Talbot interferometer

被引：1

作者：

Gogolev, A. S. ^{[1
]}

Kazaryan, M. A. ^{[2
]}

Obkhodsky, A. V. ^{[1
]}

Popov, A. S. ^{[1
]}

Rezaev, R. O. ^{[1
,3
]}

Smirnova, E. A. ^{[1
]}

机构：

[1] Natl Res Tomsk Polytech Univ, Pr Lenina 30, Tomsk 634034, Russia

[2] Russian Acad Sci, Lebedev Phys Inst, Leninskii Pr 53, Moscow 119991, Russia

[3] Natl Res Nucl Univ MEPhI, Kashirskoe Sh 31, Moscow 115409, Russia

来源：

BULLETIN OF THE LEBEDEV PHYSICS INSTITUTE | 2017年 / 44卷 / 12期

关键词：

plane-wave approximation; X-ray radiation; X-ray tube; Talbot interferometer; spherical wavefront;

D O I：

10.3103/S1068335617120028

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

This study is devoted to the analysis of the plane-wave approximation applicability to X-ray radiation incident on an object. Based on simple calculations, it is shown that an X-ray tube focal spot 0.4 x 0.8 mm in size at distances of similar to 1 m can be considered as a point source; however, the plane-wave approximation for such X-ray radiation with energy E = 22keV is valid for radiation source-object distances much longer than 10 m.

引用

页码：350 / 352

页数：3

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