Origin of pseudo-variation in high resolution neutron grating interferometry

Tobias Neuwirth, Michael Schulz, Peter Böni

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

During neutron grating interferometry measurements with a highly collimated neutron beam a pseudo-variation becomes visible in the acquired data. This pseudo-variation prevents the quantitative analysis of the acquired data, as the measured dark field data depends now on both the ultra-small-angle scattering as well as the properties leading to the pseudo-variation. In the following, the origin of this variation and dependence on the collimation of the neutron beam is explained. It will be shown how by changing the stepped grating in an interferometry scan this variation can be eliminated.

Original languageEnglish
Title of host publicationNeutron Radiography - 11th World Conference on Neutron Radiography, WCNR 2018
EditorsFilomena Salvemini, Joseph J. Bevitt
PublisherAssociation of American Publishers
Pages129-135
Number of pages7
ISBN (Print)9781644900567
DOIs
StatePublished - 2020
Event11th World Conference on Neutron Radiography, WCNR 2018 - Sydney, Australia
Duration: 2 Sep 20187 Sep 2018

Publication series

NameMaterials Research Proceedings
Volume15
ISSN (Print)2474-3941
ISSN (Electronic)2474-395X

Conference

Conference11th World Conference on Neutron Radiography, WCNR 2018
Country/TerritoryAustralia
CitySydney
Period2/09/187/09/18

Keywords

  • Neutron Grating Interferometry
  • Neutron Imaging
  • Quantitative nGI

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