64 citations · 319 across the 10 of their papers we have counts for
10 papers
Directional dark-field implicit x-ray speckle tracking using an anisotropic-diffusion Fokker-Planck equation
Konstantin M. Pavlov, David M. Paganin, Kaye S. Morgan +5
When a macroscopic-sized non-crystalline sample is illuminated using coherent x-ray radiation, a bifurcation of photon energy flow may occur. The coarse-grained complex refractive…
Modelling phase imperfections in compound refractive lenses
Rafael Celestre, Sebastien Berujon, Thomas Roth +2
Compound refractive lenses (CRL) offer outstanding potential for probe formation in X-ray micro- and nano-analysis as well as for imaging applications, but effective aberration-fre…
X-ray optics and beam characterisation using random modulation: Experiments
Sebastien Berujon, Ruxandra Cojocaru, Pierre Piault +4
In a previous paper, we reviewed theoretically some of the available processing schemes for X-ray wavefront sensing based on random modulation. We here show experimental applicatio…
X-ray Multimodal Intrinsic-Speckle-Tracking
Konstantin M. Pavlov, David M. Paganin, Heyang Li +3
We develop X-ray Multi-modal Intrinsic-Speckle-Tracking (MIST), a form of X-ray speckle-tracking that is able to recover both the position-dependent phase shift and the position-de…
Single-shot x-ray speckle-based imaging of a single-material object
Konstantin M. Pavlov, Heyang, Li +4
We develop a means for speckle-based phase imaging of the projected thickness of a single-material object, under the assumption of illumination by spatially random time-independent…
X-ray optics and beam characterization using random modulation: Theory
Sebastien Berujon, Ruxandra Cojocaru, Pierre Piault +4
X-ray near-field speckle-based phase-sensing approaches provide efficient means to characterise optical elements. Here, we present a theoretical review of several of these speckle…
Single-Image Geometric-Flow X-Ray Speckle Tracking
David M. Paganin, Helene Labriet, Emmanuel Brun +1
We develop a speckle-tracking method for x-ray phase-contrast imaging, based on the concept of geometric flow. This flow is a conserved current associated with deformation of illum…
Near-field speckle-scanning-based X-ray tomography
Sebastien Berujon, Eric Ziegler
We previously demonstrated near-field speckle scanning based x-ray imaging to be an easy-to-implement phase sensing method capable of providing both high sensitivity and high resol…
X-Ray Multimodal Tomography Using Speckle-Vector Tracking
Sebastien Berujon, Eric Ziegler
We demonstrate computerized tomography (CT) reconstructions from absorption, phase and dark-field signals obtained from scans acquired when the x-ray probe light is modulated with…
Near-field speckle-scanning-based x-ray imaging
Sebastien Berujon, Eric Ziegler
The x-ray near-field speckle-scanning concept is an approach recently introduced to obtain absorption, phase, and dark-field images of a sample. In this paper, we present ways of r…