Dresden 2014 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

MM: Fachverband Metall- und Materialphysik

MM 34: Poster Session

MM 34.6: Poster

Dienstag, 1. April 2014, 18:00–20:00, P4

Visualization of scattering properties by Neutron Grating Interferometry — •Benedikt Betz¹, Eberhard Lehman¹, Rudolf Schaefer^2,3, Peter Rauscher³, and Christian Gruenzweig¹ — ¹SINQ, Paul Scherrer Institut, Villigen, Switzerland — ²IFW, Dresden, Germany — ³Technische Universität Dresden, Dresden, Germany

The neutron Grating Interferometer (nGI) is a standard user instrument at the ICON beamline at SINQ at PSI. The setup is able to deliver simultaneously information about the attenuation, phase shift [1] and scattering properties in the so called dark-field image (DFI) [2] of a sample. Due to the interaction of neutrons with the nucleus only, they are able to penetrate deeper into matter, in particular heavier materials, than X-rays do. A further advantage of neutrons compared to X-rays is the interaction of the neutrons* magnetic moment with magnetic structures, that allows for the investigation of magnetic domain structures using the nGI technique [3]. In the forseen talk, the nGI-setup and its technique for imaging with cold neutrons will be explained. In the forseen talk, the nGI-setup and its technique for imaging with cold neutrons will be explained. Furthermore examples for the investigation of magnetic structures in Grain-oriented and non-oriented steel laminations (FeSi) will be presented. [1]:F. Pfeiffer et al. Neutron phase imaging and tomography, Phys. Rev. Lett. 96, 215505, (2006)[2]:C.Grünzweig et al. Neutron Decoherence Imaging for Visualizing Bulk Magnetic Domain Structures. Phys. Rev. Lett. 101, 025504 (2008) [3]:C.Grünzweig et al. Bulk magnetic domain structures visualized by neutron dark-field imaging. Appl. Phys. Lett. 93, 112504(2008)