X-ray phase laminography with Talbot interferometer

Sébastien Harasse, Nozomi Hirayama, Wataru Yashiro, Atsushi Momose

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Citations (Scopus)

Abstract

Laminography is a technique for 3D volume reconstruction, extending the classical tomography to the estimation of local areas in lamellar objects. We demonstrate X-ray phase laminography by using an X-ray Talbot interferometer consisting of two transmission gratings, which has been used only for X-ray phase tomography. In this presentation, experiments using 17.7 keV synchrotron radiation through a double-crystal monochromator are reported. The X-rays passed through the sample placed in front of the first phase grating. The rotation axis of the sample was set almost parallel to the sample plane normal, and inclined from the X-ray beam. Behind the second amplitude grating, moiré fringe patterns were measured by displacing one of the gratings in the direction parallel to its diffraction vector. Differential phase information were extracted through the fringe-scanning method. For the reconstruction of the three-dimensional volume from the differential phase information, the filtered back projection method was used with a specific filtering function. Promising results of phase laminography reconstruction are obtained for simulation data as well as weakly absorbing lamellar objects such as a polymer meshes and other samples. This advancement extends experiments with X-ray Talbot volume reconstruction to a larger variety of samples.

Original languageEnglish
Title of host publicationDevelopments in X-Ray Tomography VII
DOIs
Publication statusPublished - 2010 Dec 1
Externally publishedYes
EventDevelopments in X-Ray Tomography VII - San Diego, CA, United States
Duration: 2010 Aug 22010 Aug 5

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7804
ISSN (Print)0277-786X

Other

OtherDevelopments in X-Ray Tomography VII
CountryUnited States
CitySan Diego, CA
Period10/8/210/8/5

Keywords

  • Filtered backprojection
  • Laminography
  • Talbot interferometry
  • X-ray Phase imaging

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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