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. Details of the implementation of the cross-correlation method on CORELLI are given and its performance is discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 315-322 |
| Number of pages | 8 |
| Journal | Journal of Applied Crystallography |
| Volume | 51 |
| Issue number | 2 |
| DOIs | |
| State | Published - Apr 2018 |
Funding
Research at ORNL’s SNS was sponsored by the Scientific User Facilities Division, Basic Energy Sciences, Office of Science, US Department of Energy. The work at the Materials Science Division of Argonne National Laboratory was supported by the Materials Sciences and Engineering Division, Basic Energy Sciences, Office of Science, US Department of Energy.
| Funders | Funder number |
|---|---|
| US Department of Energy | |
| Office of Science | |
| Basic Energy Sciences | |
| Division of Materials Sciences and Engineering |
Keywords
- cross-correlation technique
- energy discrimination
- neutron diffraction
- time-of-flight neutron beamlines