Quantitative amplitude and phase contrast imaging in a scanning transmission X-ray microscope

被引:35
作者
Hornberger, Benjamin [1 ]
Feser, Michael [1 ]
Jacobsen, Chris [1 ]
机构
[1] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA
关键词
X-ray microscopy; phase contrast; phase recovery; configured detector; segmented detector;
D O I
10.1016/j.ultramic.2006.12.006
中图分类号
TH742 [显微镜];
学科分类号
摘要
Phase contrast in X-ray imaging provides lower radiation dose, and dramatically higher contrast at multi-keV photon energies when compared with absorption contrast. We describe here the use of a segmented detector in a scanning transmission X-ray microscope to collect partially coherent bright field images. We have adapted a Fourier filter reconstruction technique developed by McCallum, Landauer and Rodenburg to retrieve separate, quantitative maps of specimen phase shift and absorption. This is demonstrated in the imaging of a germanium test pattern using 525 eV soft X-rays. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:644 / 655
页数:12
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