Journal
JOURNAL OF APPLIED CRYSTALLOGRAPHY
Volume 51, Issue -, Pages 315-322Publisher
INT UNION CRYSTALLOGRAPHY
DOI: 10.1107/S160057671800403X
Keywords
neutron diffraction; energy discrimination; cross-correlation technique; time-of-flight neutron beamlines
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Funding
- Scientific User Facilities Division, Basic Energy Sciences, Office of Science, US Department of Energy
- Materials Sciences and Engineering Division, Basic Energy Sciences, Office of Science, US Department of Energy
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The CORELLI instrument at Oak Ridge National Laboratory is a statistical chopper spectrometer designed and optimized to probe complex disorder in crystalline materials through diffuse scattering experiments. On CORELLI, the high efficiency of white-beam Laue diffraction combined with elastic discrimination have enabled an unprecedented data collection rate to obtain both the total and the elastic-only scattering over a large volume of reciprocal space from a single measurement. To achieve this, CORELLI is equipped with a statistical chopper to modulate the incoming neutron beam quasi-randomly, and then the cross-correlation method is applied to reconstruct the elastic component from the scattering data. Details of the implementation of the cross-correlation method on CORELLI are given and its performance is discussed.
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