Multiple scattering in neutron Laue diffraction

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dc.contributor.authorMcIntyre, GJen_AU
dc.contributor.authorMaynard-Casely, HEen_AU
dc.contributor.authorBinns, Jen_AU
dc.date.accessioned2021-12-20T04:11:19Zen_AU
dc.date.available2021-12-20T04:11:19Zen_AU
dc.date.issued2018-11-19en_AU
dc.date.statistics2021-12-14en_AU
dc.description.abstractApart from the specialised but important application to phase determination, multiple scattering in single-crystal neutron diffraction is usually an undesirable source of error. The presence of multiple scattering for a particular Bragg reflection can be verified by performing an azimuthal scan, if the diffractometer offers that possibility, or by varying the wavelength. Either of these checks is generally straightforward on a monochromatic diffractometer, where attention can be easily focused on a single reflection. Correction for multiple scattering ranges from rejection of the reflections affected in longer-wavelength experiments to subtraction of an empirically determined constant contribution from all data in shorter-wavelength experiments. Little consideration has thus far been given to the contribution of multiple scattering to neutron Laue diffraction, due primarily to multiple scattering being less likely to occur in the samples best adapted to the technique. In addition,scanning a single reflection to detect the presence of multiple scattering is not the forte of Laue diffraction where many reflections are excited and detected simultaneously, and the broad waveband further complicates the possibility to correct for multiple scattering. Here we show that the multiple scattering can occur in a neutron Laue experiment by using two single crystals (in a diamond-anvil high-pressure cell) to highlight the effect in the Laue pattern. The (few) observations in this unconventional experiment allow estimation of the magnitude of the effect in standard neutron Laue experiments both at reactor and spallation sources.en_AU
dc.identifier.citationMcIntyre, G., Maynard-Casely, H., Binns, J. (2018). Multiple scattering in neutron Laue diffraction. Presentation to the ANBUG-AINSE Neutron Scattering Symposium, AANSS 2018, 19 - 21 November 2018, Sydney, Australia. Retrieved from https://events01.synchrotron.org.au/event/84/book-of-abstracts.pdfen_AU
dc.identifier.conferenceenddate21 November 2018en_AU
dc.identifier.conferencenameANBUG-AINSE Neutron Scattering Symposium, AANSS 2018en_AU
dc.identifier.conferenceplaceLucas Heights, NSWen_AU
dc.identifier.conferencestartdate19 November 2018en_AU
dc.identifier.urihttps://events01.synchrotron.org.au/event/84/book-of-abstracts.pdfen_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/12581en_AU
dc.language.isoenen_AU
dc.publisherAustralian Institute of Nuclear Science and Engineeringen_AU
dc.subjectLaue methoden_AU
dc.subjectMonocrystalsen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectWavelengthsen_AU
dc.subjectBragg reflectionen_AU
dc.subjectMeasuring instrumentsen_AU
dc.subjectDiffractometersen_AU
dc.subjectCrystalsen_AU
dc.titleMultiple scattering in neutron Laue diffractionen_AU
dc.typeConference Posteren_AU
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