X-ray Talbot Interferometry with Capillary Plates

Abstract

An X-ray Talbot interferometer consisting of two capillary plates, which were used as X-ray amplitude gratings, was evaluated for X-ray phase imaging. A theoretical aspect of capillary X-ray Talbot interferometry is presented with a preliminary operation result using synchrotron radiation. A two-dimensional X-ray Talbot effect, or self-imaging effect, which was the basis of Talbot interferometry, was observed with the capillary plate, and moiré images formed by the X-ray Talbot interferometer exhibited contrasts corresponding to the differential phase shift caused by phase objects placed in front of the interferometer. Finally, the possibility of quantitative phase measurement with a fringe scanning technique is discussed.

Grid-enhanced X-ray coded aperture microscopy with polycapillary optics

“…Grid-enhanced XCAMPO could be also adopted for X-ray phase-contrast imaging 36 37 or dark-field imaging 38 that is based on coded aperture masks. Also, a general concept of structural illumination 39 40 could be very useful for obtaining multimodal images with polycapilary optics.…”

X-ray imaging of the surface acoustic wave propagation in La<inf>3</inf>Ga<inf>5</inf>SiO<inf>14</inf> crystal

“…The synchrotron radiation at ESRF is, in part, coherent and this is one of the conditions for the realization of the Talbot effect. If an X-ray wavelength λ is much smaller than that of SAW, the Talbot distance is determined as [18][19] [18][19]. In our experiment, a periodic structure of acoustic wave field with a 10 μm period was observed, which is equal to the SAW wavelength 10 = Λ μm.…”

X‐Ray Phase‐Contrast Imaging with Three 2D Gratings

“…As there are theories on the Talbot effect available for spherical wave or Gaussian beams [ 25 ], the results in this manuscript can be extended to those cases. For example, in [ 32 ], the capillary plates with hexagonal patterns have been applied to phase-contrast imaging.…”