Semi-transparent central stop in high-resolution X-ray ptychography using Kirkpatrick-Baez focusing

被引：42
|
作者：
Wilke, R. N. [1 ]
Vassholz, M. [1 ]
Salditt, T. [1 ]
机构：
[1] Univ Gottingen, Inst Xray Phys, D-37077 Gottingen, Germany
来源：
ACTA CRYSTALLOGRAPHICA SECTION A | 2013年 / 69卷
关键词：
PRIMARY WAVE FIELDS; K-B MIRRORS; PHASE RETRIEVAL; DIFFRACTION MICROSCOPY; NONPERIODIC OBJECTS; ALGORITHM; RECONSTRUCTION; TRANSMISSION; INFORMATION;
D O I：
10.1107/S0108767313019612
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A ptychographic coherent X-ray diffractive imaging (PCDI) experiment has been carried out using 7.9 keV X-rays and Kirkpatrick-Baez focusing mirrors. By introducing a semi-transparent central stop in front of the detector the dynamic range on the detector is increased by about four orders of magnitude. The feasibility of this experimental scheme is demonstrated for PCDI applications with a resolution below 10 nm. The results are compared with reference data and an increase of resolution by a factor of two is obtained, while the deviation of the reconstructed phase map from the reference is below 1%.
引用
收藏
页码：490 / 497
页数：8
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