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

Wilke, Robin Niklas; Vassholz, Malte; Salditt, Tim

doi:10.1107/S0108767313019612

Publisher DOI:	10.1107/S0108767313019612
Title:	Semi-transparent central stop in high-resolution X-ray ptychography using Kirkpatrick-Baez focusing
Language:	English
Authors:	Wilke, Robin Niklas Vassholz, Malte Salditt, Tim
Keywords:	ptychography; Kirkpatrick–Baez mirrors; semi-transparent central stop; semi-transparent beam stop; coherent diffractive imaging; phase reconstruction
Issue Date:	14-Aug-2013
Publisher:	Wiley
Journal or Series Name:	Acta crystallographica. Section A, Foundations and advances
Volume:	69
Issue:	5
Startpage:	490
Endpage:	497
Abstract:	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%.
URI:	http://hdl.handle.net/20.500.12738/15590
ISSN:	1600-5724
Review status:	This version was peer reviewed (peer review)
Institute:	Georg-August-Universität Göttingen
Type:	Article
Appears in Collections:	Publications without full text