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

Abstract

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. Lastly, details of the implementation of the cross-correlation method on CORELLI are given and its performance is discussed.

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [2]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Neutron Scattering Division
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1429588
Alternate Identifier(s):
OSTI ID: 1433002
Grant/Contract Number:
AC02-06CH11357
Resource Type:
Journal Article: Published Article
Journal Name:
Journal of Applied Crystallography (Online)
Additional Journal Information:
Journal Name: Journal of Applied Crystallography (Online); Journal Volume: 51; Journal Issue: 2; Journal ID: ISSN 1600-5767
Publisher:
International Union of Crystallography
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; neutron diffraction; energy discrimination; cross-correlation technique; time-of-flight neutron beamlines

Citation Formats

Ye, Feng, Liu, Yaohua, Whitfield, Ross, Osborn, Ray, and Rosenkranz, Stephan. Implementation of cross correlation for energy discrimination on the time-of-flight spectrometer CORELLI. United States: N. p., 2018. Web. doi:10.1107/S160057671800403X.
Ye, Feng, Liu, Yaohua, Whitfield, Ross, Osborn, Ray, & Rosenkranz, Stephan. Implementation of cross correlation for energy discrimination on the time-of-flight spectrometer CORELLI. United States. doi:10.1107/S160057671800403X.
Ye, Feng, Liu, Yaohua, Whitfield, Ross, Osborn, Ray, and Rosenkranz, Stephan. Mon . "Implementation of cross correlation for energy discrimination on the time-of-flight spectrometer CORELLI". United States. doi:10.1107/S160057671800403X.
@article{osti_1429588,
title = {Implementation of cross correlation for energy discrimination on the time-of-flight spectrometer CORELLI},
author = {Ye, Feng and Liu, Yaohua and Whitfield, Ross and Osborn, Ray and Rosenkranz, Stephan},
abstractNote = {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. Lastly, details of the implementation of the cross-correlation method on CORELLI are given and its performance is discussed.},
doi = {10.1107/S160057671800403X},
journal = {Journal of Applied Crystallography (Online)},
number = 2,
volume = 51,
place = {United States},
year = {Mon Mar 26 00:00:00 EDT 2018},
month = {Mon Mar 26 00:00:00 EDT 2018}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1107/S160057671800403X

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