Characterization of x-ray phase vortices by ptychographic coherent diffractive imaging

2014 ◽  
Vol 39 (18) ◽  
pp. 5281 ◽  
Author(s):  
J. Vila-Comamala ◽  
A. Sakdinawat ◽  
M. Guizar-Sicairos
Keyword(s):  
Diffractive Imaging ◽  
X Ray ◽  
Coherent Diffractive Imaging

Characterization of a 20-nm hard x-ray focus by ptychographic coherent diffractive imaging

2011 ◽  
Author(s):  
Joan Vila-Comamala ◽  
Ana Diaz ◽  
Manuel Guizar-Sicairos ◽  
Sergey Gorelick ◽  
Vitaliy A. Guzenko ◽  
...  
Keyword(s):  
Diffractive Imaging ◽  
X Ray ◽  
Coherent Diffractive Imaging ◽  
20 Nm

scholarly journals Characterization of high-resolution diffractive X-ray optics by ptychographic coherent diffractive imaging

2011 ◽  
Vol 19 (22) ◽  
pp. 21333 ◽  
Author(s):  
Joan Vila-Comamala ◽  
Ana Diaz ◽  
Manuel Guizar-Sicairos ◽  
Alexandre Mantion ◽  
Cameron M. Kewish ◽  
...  
Keyword(s):  
High Resolution ◽  
Diffractive Imaging ◽  
Ray Optics ◽  
X Ray ◽  
Coherent Diffractive Imaging

scholarly journals Coherent imaging at the diffraction limit

2014 ◽  
Vol 21 (5) ◽  
pp. 1011-1018 ◽  
Author(s):  
Pierre Thibault ◽  
Manuel Guizar-Sicairos ◽  
Andreas Menzel
Keyword(s):  
Three Dimensions ◽  
Coherent Imaging ◽  
Field Methods ◽  
Diffractive Imaging ◽  
Time Resolved ◽  
Full Field ◽  
X Ray ◽  
Coherent Diffractive Imaging ◽  
Time Resolved Imaging

X-ray ptychography, a scanning coherent diffractive imaging technique, holds promise for imaging with dose-limited resolution and sensitivity. If the foreseen increase of coherent flux by orders of magnitude can be matched by additional technological and analytical advances, ptychography may approach imaging speeds familiar from full-field methods while retaining its inherently quantitative nature and metrological versatility. Beyond promises of high throughput, spectroscopic applications in three dimensions become feasible, as do measurements of sample dynamics through time-resolved imaging or careful characterization of decoherence effects.

scholarly journals Hard X-ray polarizer to enable simultaneous three-dimensional nanoscale imaging of magnetic structure and lattice strain

2016 ◽  
Vol 23 (5) ◽  
pp. 1210-1215 ◽  
Author(s):  
Jonathan Logan ◽  
Ross Harder ◽  
Luxi Li ◽  
Daniel Haskel ◽  
Pice Chen ◽  
...  
Keyword(s):  
Magnetic Circular Dichroism ◽  
Three Dimensional ◽  
Control Sample ◽  
Magnetic Ordering ◽  
X Rays ◽  
Diffractive Imaging ◽  
X Ray ◽  
Coherent Diffractive Imaging ◽  
Diffraction Patterns ◽  
A New Technique

Recent progress in the development of dichroic Bragg coherent diffractive imaging, a new technique for simultaneous three-dimensional imaging of strain and magnetization at the nanoscale, is reported. This progress includes the installation of a diamond X-ray phase retarder at beamline 34-ID-C of the Advanced Photon Source. The performance of the phase retarder for tuning X-ray polarization is demonstrated with temperature-dependent X-ray magnetic circular dichroism measurements on a gadolinium foil in transmission and on a Gd5Si2Ge2crystal in diffraction geometry with a partially coherent, focused X-ray beam. Feasibility tests for dichroic Bragg coherent diffractive imaging are presented. These tests include (1) using conventional Bragg coherent diffractive imaging to determine whether the phase retarder introduces aberrations using a nonmagnetic gold nanocrystal as a control sample, and (2) collecting coherent diffraction patterns of a magnetic Gd5Si2Ge2nanocrystal with left- and right-circularly polarized X-rays. Future applications of dichroic Bragg coherent diffractive imaging for the correlation of strain and lattice defects with magnetic ordering and inhomogeneities are considered.

scholarly journals Cryo-coherent diffractive imaging of biological samples with X-ray free-electron lasers

2016 ◽  
Vol 72 (2) ◽  
pp. 177-178
Author(s):  
Huaidong Jiang
Keyword(s):  
Biological Samples ◽  
Free Electron ◽  
Free Electron Laser ◽  
Free Electron Lasers ◽  
Diffractive Imaging ◽  
X Ray ◽  
Coherent Diffractive Imaging ◽  
Recent Developments

Recent developments in the imaging of biological samples using the X-ray free-electron laser at the SACLA facility are highlighted.

scholarly journals Single-Shot X-Ray Coherent Diffractive Imaging of Superfluid He Nanodroplets

2014 ◽  
Vol 70 (a1) ◽  
pp. C289-C289
Author(s):  
Oliver Gessner ◽  
Christoph Bostedt ◽  
Andrey Vilesov
Keyword(s):  
Cross Sections ◽  
Direct Access ◽  
Single Shot ◽  
Diffractive Imaging ◽  
Helium Droplets ◽  
Helium Nanodroplets ◽  
Time Resolved ◽  
X Ray ◽  
Coherent Diffractive Imaging ◽  
Quantum Phenomena

Single-shot coherent diffractive imaging (CDI) experiments were performed on pure and doped helium nanodroplets using femtosecond X-ray pulses from the Linac Coherent Light Source (LCLS). The superfluid nature of helium droplets presents a rare opportunity to study the onset of macroscopic quantum phenomena in finite, sub-micron scale systems. Despite the small X-ray scattering cross sections of atomic helium, high-quality single-shot CDI data were obtained that give direct access to sizes and shapes of individual nanodroplets. The diffraction patterns from helium droplets doped with xenon atoms differ starkly from the patterns from pure droplets. Strong indications for the formation of complex xenon structures inside the superfluid helium environment are observed, giving access to information about the structure and aggregation dynamics of the dopant species. The results are discussed with respect to the hydrodynamic properties of the superfluid droplets and compared to those of classical drops. An outlook on femtosecond time-resolved CDI experiments to study dynamics in pure and Xe-doped He nanodroplets will be given based on a new undulator-based X-ray pump/X-ray probe technique that is currently under development at LCLS.

scholarly journals Numerical Analysis of Antiphase Domain Boundaries in a FeAl Alloy Using X-Ray Bragg Coherent Diffractive Imaging

2018 ◽  
Vol 24 (S2) ◽  
pp. 50-51 ◽  
Author(s):  
Chan Kim ◽  
Virginie Chamard ◽  
Jorg Hallmann ◽  
Wei Lu ◽  
Ulrike Boesenberg ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Antiphase Domain ◽  
Diffractive Imaging ◽  
Feal Alloy ◽  
X Ray ◽  
Coherent Diffractive Imaging ◽  
Domain Boundaries

scholarly journals Design of a liquid cell toward three-dimensional imaging of unidirectionally-aligned particles in solution using X-ray free-electron lasers

2020 ◽  
Vol 22 (5) ◽  
pp. 2622-2628 ◽  
Author(s):  
Akihiro Suzuki ◽  
Takashi Kimura ◽  
Ying Yang ◽  
Yoshiya Niida ◽  
Akiko Nishioka ◽  
...  
Keyword(s):  
Free Electron ◽  
Three Dimensional ◽  
Free Electron Lasers ◽  
Diffractive Imaging ◽  
Three Dimensional Imaging ◽  
X Ray ◽  
Coherent Diffractive Imaging ◽  
Liquid Cell

A liquid cell was designed for coherent diffractive imaging measurements at high tilt angles and tested at SACLA.

scholarly journals Versatility of a hard X-ray Kirkpatrick–Baez focus characterized by ptychography

2013 ◽  
Vol 20 (3) ◽  
pp. 490-497 ◽  
Author(s):  
Klaus Giewekemeyer ◽  
Robin N. Wilke ◽  
Markus Osterhoff ◽  
Matthias Bartels ◽  
Sebastian Kalbfleisch ◽  
...  
Keyword(s):  
Spatial Filter ◽  
Large Field ◽  
X Rays ◽  
Height Profile ◽  
Diffractive Imaging ◽  
X Ray ◽  
The Past ◽  
Moderate Resolution ◽  
Nano Imaging

In the past decade Kirkpatrick–Baez (KB) mirrors have been established as powerful focusing systems in hard X-ray microscopy applications. Here a ptychographic characterization of the KB focus in the dedicated nano-imaging setup GINIX (Göttingen Instrument for Nano-Imaging with X-rays) at the P10 coherence beamline of the PETRA III synchrotron at HASLYLAB/DESY, Germany, is reported. More specifically, it is shown how aberrations in the KB beam, caused by imperfections in the height profile of the focusing mirrors, can be eliminated using a pinhole as a spatial filter near the focal plane. A combination of different pinhole sizes and illumination conditions of the KB setup makes the prepared optical setup well suited not only for high-resolution ptychographic coherent X-ray diffractive imaging but also for moderate-resolution/large-field-of-view propagation imaging in the divergent KB beam.

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