A new optics for dark-field imaging in X-ray region 'Owl'

被引：30

作者：

Ando, M

Sugiyama, H

Maksimenko, A

Pattanasiriwisawa, W

Hyodo, K

Zhang, XW

机构：

[1] High Energy Accelerator Res Org, Inst Mat Struct Sci, Photon Factory, Tsukuba, Ibaraki 3050801, Japan

[2] Grad Univ Adv Studies, Sch Adv Studies, Dept Photo Sci, Kanagawa 2400193, Japan

[3] Grad Univ Adv Studies, Sch Math Phys Sci, Dept Mat Struct Sci, Tsukuba, Ibaraki 3050801, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 2001年 / 40卷 / 8A期

关键词：

X-ray dark-field imaging; monolithic X-ray optics; refraction contrast; synchrotron radiation; vertical wiggler; asymmetrically cut monochromator; composite material; fibers; mammographic phantom;

D O I：

10.1143/JJAP.40.L844

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An X-ray optics for X-ray dark-field imaging named 'Owl' is proposed. It involves an asymmetric monochromator and a monolithic X-ray optics comprising a collimator C and an analyzer A. The C and A have 4,4,0 diffraction and thickness of 1.08 mm +/- 10 mum. The X-ray energy used was 35 keV. These diffractions have an angular width of approximately 0.3 mu rad. The analyzer A accepts only the refracted component from a sample S which is located between C and A, while eliminating the straight component without reacting with it. Two samples, one Al matrix containing boron fibers of 300 mum diameter and the other a wax block containing a nylon fiber simulating breast cancer, show very clear fiber imaging usually not visible by the conventional X-ray technique.

引用

页码：L844 / L846

页数：3

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