Journal article
Analysing neutron scattering data using McStas virtual experiments
University of Copenhagen1
Nano-Microstructures in Materials, Materials Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark2
Materials Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark3
Risø National Laboratory for Sustainable Energy, Technical University of Denmark4
Paul Scherrer Institute5
Institut Laue-Langevin6
University of Connecticut7
Lund University8
With the intention of developing a new data analysis method using virtual experiments we have built a detailed virtual model of the cold triple-axis spectrometer RITA-II at PSI, Switzerland, using the McStas neutron ray-tracing package. The parameters characterising the virtual instrument were carefully tuned against real experiments.
In the present paper we show that virtual experiments reproduce experimentally observed linewidths within 1–3% for a variety of samples. Furthermore we show that the detailed knowledge of the instrumental resolution found from virtual experiments, including sample mosaicity, can be used for quantitative estimates of linewidth broadening resulting from, e.g., finite domain sizes in single-crystal samples.
Language: | English |
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Year: | 2011 |
Pages: | S138-S143 |
ISSN: | 18729576 and 01689002 |
Types: | Journal article |
DOI: | 10.1016/j.nima.2010.06.235 |
ORCIDs: | Bergbäck Knudsen, Erik and Christensen, Niels Bech |