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Title: Polychromatic diffraction contrast tomography

This tutorial review introduces the use of polychromatic radiation for 3D grain mapping using X-ray diffraction contrast tomography. The objective is to produce a 3D map of the grain shapes and orientations within a bulk, millimeter-sized polycrystalline sample. The use of polychromatic radiation enables the standard synchrotron X-ray technique to be applied in a wider range of contexts: 1) Using laboratory X-ray sources allows a much wider application of the diffraction contrast tomography technique. 2) Neutron sources allow large samples, or samples containing high Z elements to be studied. 3) Applied to synchrotron sources, smaller samples may be treated, or faster measurements may be possible. Challenges and particularities in the data acquisition and processing, and the limitations of the different variants, are discussed. - Highlights: • We present a tutorial review of polychromatic diffraction contrast tomography techniques. • The use of polychromatic radiation allows the standard synchrotron DCT technique to be extended to a range of other sources. • The characteristics and limitations of all variants of the techniques are derived, discussed and compared. • Examples using laboratory X-ray and cold neutron radiation are presented. • Suggestions for the future development of these techniques are presented.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [4] ;  [6]
  1. Synchrotron SOLEIL, Gif-sur-Yvette 91192 (France)
  2. Xnovo Technology ApS, 4600 Køge (Denmark)
  3. (Netherlands)
  4. MATEIS, INSA de Lyon, Villeurbanne 69621 (France)
  5. Paul Scherrer Institut, CH-5232 Villigen (Switzerland)
  6. (France)
Publication Date:
OSTI Identifier:
22403579
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Characterization; Journal Volume: 97; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COLD NEUTRONS; COMPARATIVE EVALUATIONS; DATA ACQUISITION; MAPPING; NEUTRON SOURCES; POLYCRYSTALS; SYNCHROTRON RADIATION SOURCES; TOMOGRAPHY; X RADIATION; X-RAY DIFFRACTION; X-RAY SOURCES