Implementation of cross correlation for energy discrimination on the time-of-flight spectrometer CORELLI

Ye, Feng; Liu, Yaohua; Whitfield, Ross; Osborn, Ray; Rosenkranz, Stephan

doi:10.1107/S160057671800403X

Title: Implementation of cross correlation for energy discrimination on the time-of-flight spectrometer CORELLI

Journal Article · Mon Mar 26 00:00:00 EDT 2018 · Journal of Applied Crystallography (Online)

DOI:https://doi.org/10.1107/S160057671800403X· OSTI ID:1429588

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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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Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC02-06CH11357; AC05-00OR22725

OSTI ID:: 1429588

Alternate ID(s):: OSTI ID: 1433002; OSTI ID: 1471918

Journal Information:: Journal of Applied Crystallography (Online), Journal Name: Journal of Applied Crystallography (Online) Vol. 51 Journal Issue: 2; ISSN 1600-5767

Publisher:: International Union of Crystallography (IUCr)Copyright Statement

Country of Publication:: Denmark

Language:: English

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Cited by: 69 works

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