Premium
Bragg‐edge attenuation spectra at voxel level from 4D wavelength‐resolved neutron tomography
Author(s) -
Carminati Chiara,
Strobl Markus,
Minniti Triestino,
Boillat Pierre,
Hovind Jan,
Morgano Manuel,
Holm Rod Thomas,
Polatidis Efthymios,
Valsecchi Jacopo,
Mannes David,
Kockelmann Winfried,
Kaestner Anders
Publication year - 2020
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s1600576720000151
Subject(s) - optics , materials science , tomography , wavelength , beamline , image resolution , voxel , attenuation , neutron imaging , neutron , physics , radiology , beam (structure) , medicine , quantum mechanics
4D wavelength‐resolved neutron tomography of a reference sample made of several polycrystalline materials, namely nickel, iron, titanium, lead, copper and aluminium, is presented. Data were acquired using the time‐of‐flight transmission imaging method at the IMAT beamline at the ISIS pulsed neutron source. Wavelength‐dispersive tomography reconstruction was computed using filtered back projection, allowing wavelength‐resolved total‐cross‐section retrieval for each voxel in the reconstructed volume of the sample. The need for background correction to enable quantitative results and analysis is discussed, and the achieved 3D spatial resolution with respect to the obtained Bragg‐edge pattern quality is investigated.