A method for phase reconstruction from measurements obtained using a configured detector with a scanning transmission X-ray microscope.
We developed a technique for performing quantitative phase reconstructions from differential phase contrast images obtained using a configured detector in a scanning transmission X-ray microscope geometry. The technique uses geometric optics to describe the interaction of the X-ray beam with the specimen, which allows interpretation of the measured intensities in terms of the derivative of the phase thickness. Integration of the resulting directional derivatives is performed using a Fourier integration technique. We demonstrate the approach by reconstructing simulated measurements of a 0.5-µm-diameter gold sphere at 7-keV photon energy.
Advanced Photon Source, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439-4856, USA.
Martin D
MD
de Jonge
Stefan
S
Vogt
Daniel
D
Legnini
Ian
I
McNulty
Christoph
C
Rau
David
D
Paterson
Benjamin
B
Hornberger
Christian
C
Holzner
Chris
C
Jacobsen