Large-Area Phase-Contrast X-ray Imaging System Using a Two-Crystal X-ray Interferometer—Development of an Interference-Pattern-Based Feedback Positioning System | Zendy

Akio Yoneyama | Zendy

Open Access

Large-Area Phase-Contrast X-ray Imaging System Using a Two-Crystal X-ray Interferometer—Development of an Interference-Pattern-Based Feedback Positioning System

Author(s) -

Akio Yoneyama

Publication year - 2004

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.177

H-Index - 75

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.1758039

Subject(s) - interference (communication) , interferometry , optics , phase (matter) , signal (programming language) , physics , crystal (programming language) , rotation (mathematics) , contrast (vision) , beam (structure) , signal beam , materials science , computer science , computer vision , telecommunications , channel (broadcasting) , quantum mechanics , programming language

To more accurately suppress the phase fluctuation of the interference beams of a large-area phase-contrast X-ray imaging system using a two-crystal X-ray interferometer, a new feedback positioning system (FPS) has been developed and applied. The motion of interference patterns replaces the intensity of the interference beam in a small region as the feedback signal used in controlling the rotation of crystal blocks relative to each other. This FPS kept the phase fluctuation of the interference beams within pi/15 over more than six hours. Examples of high-quality two and three-dimensional images of biological samples obtained by the imaging system with the new FPS are given

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