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X–ray absorption, phase and dark–field tomography through a beam tracking approach

DOI: 10.1038/srep16318 DOI Help
PMID: 26541117 PMID Help

Authors: Fabio A. Vittoria (University College London) , Marco Endrizzi (University College London) , Paul C. Diemoz (University College London) , Anna Zamir (University College London) , Ulrich H. Wagner (Diamond Light Source) , Christoph Rau (Diamond Light Source) , Ian Robinson (Research Complex at Harwell) , Alessandro Olivo (University College London)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Scientific Reports , VOL 5 , PAGES 16318

State: Published (Approved)
Published: November 2015

Open Access Open Access

Abstract: We present a development of the beam–tracking approach that allows its implementation in computed tomography. One absorbing mask placed before the sample and a high resolution detector are used to track variations in the beam intensity distribution caused by the sample. Absorption, refraction, and dark–field are retrieved through a multi–Gaussian interpolation of the beam. Standard filtered back projection is used to reconstruct three dimensional maps of the real and imaginary part of the refractive index, and of the dark–field signal. While the method is here demonstrated using synchrotron radiation, its low coherence requirements suggest a possible implementation with laboratory sources.

Journal Keywords: Applied physics; X-rays

Subject Areas: Physics, Technique Development, Materials

Instruments: I13-1-Coherence

Added On: 16/11/2015 16:00


Discipline Tags:

Technique Development - Materials Science Physics Technique Development - Physics Materials Science

Technical Tags:

Imaging Tomography