Karlsruher Institut Fur Technologie

Siemens Aktiengesell Schaft

Forschungszentrum Karlsruhe Gmbh

Elena Reznikova

Franz Pfeiffer

Jürgen Mohr

Juergen Mohr

Vladimir Nazmov

Eckhard Hempel

Joachim Schulz

Martin Wilfried Börner

Hartmut Kumm

Grating interferometer comprising inclined phase grating structures, method for increasing the definition of phase contrast images of interferometers or in applications which are based on the Talbot effect, using inclined phase grating structures, phase gratings wherein the grating structures are positioned at angles on the substrate of the phase grating, method for producing grating structures which are positioned at angles on the substrate of the phase grating, and corresponding uses.

Inclined phase grating structures

Gratings for analyzing the interference image in interferometers for phase contrast X-ray tomography, comprising a carrier and grating webs produced from at least two different materials, method for producing the same and use thereof.

Gratings for X-ray imaging, consisting of at least two materials

A grating with a large aspect ratio is disclosed, in particular to be used as an X-ray optical grating in a CT system and in particular produced by a lithography method. In at least one embodiment, the grating includes a multiplicity of recurring alternating grating webs and grating gaps with a height, and a multiplicity of filler beams, respectively arranged in the grating gaps with a spacing from one another in the direction of the gaps, which beams connect respectively adjacent grating webs over their height. In at least one embodiment, the grating webs and the grating gaps run from a first to a second side of the grating, and a filler beam has a width in the direction of the gaps and this width is at most 10% of the spacing between two adjacent filler beams. In at least one embodiment, the spacings between respective adjacent filler beams in a grating gap do not vary by more than 10% in the entire grating. At least one embodiment of the invention furthermore relates to a CT system containing at least one grating according to at least one embodiment of the invention.

Grating with a large aspect ratio, in particular to be used as an X-ray optical grating in a CT system, produced by a lithography method

In an x-ray lens for focusing x-rays over a large energy range wherein the lens comprises a large number of lens elements, the lens elements have a quasi-parabolic profile Y(x) according to the equation()=/2[(())]Wherein x represents the parabola axis, l/2r represents the half parameter of the parabola and f(x) represents a function different from zero.

X-ray lens

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Novosibirsk, Russia

Elena Reznikova