NEUWAVE2014

Session

Methods + Software II

8 Apr 2014, 14:00

GATE

Conveners

Methods + Software II

• Wolfgang Treimer (Beuth Hochschule für Technik)
• Felix Beckmann (Helmholtz-Zentrum Geesthacht)

5. ARTEFACTS IN NEUTRON CT – THEIR EFFECTS AND HOW TO REDUCE THEM

Burkhard Schillinger

08/04/2014, 14:30

Neutron Computed Tomography has some boundary conditions that are not found in X-ray CT. The intensity of recorded projections is influenced by the buil-up of afterglow of the neutron scintillation screen, the projections of the sample itself often contain additional intensity next to edges which is caused by refraction in the sample. The additional intensity acts like ‘negative absorption’,...

22. Refraction based edge enhancements at structural materials – improved studies with highest special resolution and by MacStas simulations

Dr Eberhard Lehmann (PSI)

08/04/2014, 14:00

Edge enhancement features can be observed for several structural materials (Fe, Al, Zr, Pb, Cu, Ti, …) under certain conditions. In several dedicated experimental runs, preferential at the cold imaging beam line ICON, systematic studies were performed to understand this phenomenon from the experimental side. On the other hand, a MacStas tool was developed for the simulation by ray-tracing of...

17. TOWARDS A REALLY QUANTITATIVE PHASE ANALYSIS THROUGH NEUTRON TOMOGRAPHY: OPEN QUESTIONS STILL TO BE SOLVED.

Dr Francesco Grazzi (CNR-ISC)

08/04/2014, 15:00

Neutron imaging techniques have a huge potential for the characterization of morphological, compositional and microstructural properties of materials. The possibility to apply Energy Selective Neutron imaging is an added value opening enormous possibilities in the field of metallurgy both for the characterization of industrial products and to gain information on historical artifacts. In spite...