Aarhus Universitets segl

English

Du er her: AU » Om AU » Organisation » Polychromatic neutron phase-contrast imaging of weakly ab...

Om AU

Polychromatic neutron phase-contrast imaging of weakly absorbing samples enabled by phase retrieval

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review

DOI

  • Maja Østergaard
  • Estrid Buhl Naver, Danmarks Tekniske Universitet
    • ,
  • Anders Kaestner, Paul Scherrer Institute
    • ,
  • Peter K Willendrup, Danmarks Tekniske Universitet
    • ,
  • Annemarie Brüel
  • Henning Osholm Sørensen, Danmarks Tekniske Universitet
    • ,
  • Jesper Skovhus Thomsen
  • Søren Schmidt, European Spallation Source ERIC, Lund University
    • ,
  • Henning Friis Poulsen, Danmarks Tekniske Universitet
    • ,
  • Luise Theil Kuhn, Danmarks Tekniske Universitet
    • ,
  • Henrik Birkedal

The use of a phase-retrieval technique for propagation-based phase-contrast neutron imaging with a polychromatic beam is demonstrated. This enables imaging of samples with low absorption contrast and/or improving the signal-to-noise ratio to facilitate e.g. time-resolved measurements. A metal sample, designed to be close to a phase pure object, and a bone sample with canals partially filled with D2O were used for demonstrating the technique. These samples were imaged with a polychromatic neutron beam followed by phase retrieval. For both samples the signal-to-noise ratios were significantly improved and, in the case of the bone sample, the phase retrieval allowed for separation of bone and D2O, which is important for example for in situ flow experiments. The use of deuteration contrast avoids the use of chemical contrast enhancement and makes neutron imaging an interesting complementary method to X-ray imaging of bone.

OriginalsprogEngelsk
TidsskriftJournal of Applied Crystallography
Vol/bind56
NummerPart 3
Sider (fra-til)673-682
Antal sider10
ISSN0021-8898
DOI
StatusUdgivet - jun. 2023

Se relationer på Aarhus Universitet Citationsformater

ID: 327064115