Study on the X-ray transmission characteristics of monolithic poly-capillary quasi-parallel lens composed with different diameter tubes

被引：5

作者：

Pan, Kai ^{[1
,3
]}

Li, Yude ^{[1
,2
,3
,4
]}

Zhang, Shuang ^{[1
,3
]}

Qin, Min ^{[1
,3
,5
]}

Wang, Jinbang ^{[1
,3
]}

Meng, Zhaoying ^{[1
,3
]}

Xiang, Zhujun ^{[1
,3
]}

Liu, Zhiguo ^{[1
,2
,3
,4
]}

Sun, Tianxi ^{[1
,3
,4
]}

机构：

[1] Beijing Normal Univ, Coll Nucl Sci & Technol, Beijing 100875, Peoples R China

[2] Beijing Key Lab Appl Opt, Beijing 100875, Peoples R China

[3] Minist Educ, Key Lab Beam Technol, Beijing 100875, Peoples R China

[4] Beijing Radiat Ctr, Beijing 100875, Peoples R China

[5] China Acad Engn Phys, Metrol & Testing Ctr, Mianyang 621000, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2019年 / 439卷

基金：

中国国家自然科学基金; 芬兰科学院;

关键词：

X-ray optics; Poly-capillary quasi-parallel lenses; Poly-capillary lenses with combined structure; Uniform top-hat X-ray beam; OPTICS;

D O I：

10.1016/j.optcom.2019.01.038

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Intensity distribution of the X-ray beam redirected through a conventional monolithic poly-capillary quasi-parallel lens is similar to a Gaussian distribution, which will bring about unsatisfactory imaging quality for medical applications and affect the peak-to-background ratio in X-ray diffraction experiments. These disadvantages can be overcome by adopting poly-capillary X-ray lenses structured with three tiers that fabricated from different diameters of capillaries. This paper developed a mathematical model of monolithic poly-capillary quasi-parallel lens composed with different diameter tubes, and experimental data of intensity distribution, transmission efficiency and divergence have been compared with simulation results based on a ray-tracing technique.

引用

页码：295 / 303

页数：9

共 15 条

[1] X-RAY EVANESCENT-WAVE ABSORPTION AND EMISSION [J].