Recent progress on practical materials study by Bragg edge imaging at J-PARC

• DOI: 10.1016/j.physb.2017.12.038
• Publication Date: 2017-12-15T03:39:14Z
• Authors: K. Oikawa; Y.H. Su; R. Kiyanagi; T. Kawasaki; T. Shinohara; T. Kai; K. Hiroi; S. Harjo; J.D. Parker; Y. Matsumoto; H. Hayashida; S.Y. Zhang; Y. Tomota; H. Sato
• Keywords: Neutron Imaging; Texture (cosmology)

Abstract We are developing practical material observation methods using neutron imaging at J-PARC Materials and Life Science Experimental Facility (MLF). Neutron Bragg-edge transmission (BET) imaging, one of the energy-resolved neutron imaging methods, makes it possible to quantitatively visualize the two-dimensional distribution of physical properties within a sample. Here, we report two application examples. First, feasibility of measuring the temperature distribution of a copper rod through the thermal expansion of the lattice constant using BET spectral analysis was studied. Second, visualization of the texture variation and the strain distribution of a bent steel plate through the 2D-BET imaging method were performed. The obtained results for both experiments were compared with those obtained by the neutron diffraction (ND) method.