High-pressure single-crystal neutron diffraction

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dc.contributor.authorMcIntyre, GJen_AU
dc.contributor.authorBinns, Jen_AU
dc.contributor.authorParsons, Sen_AU
dc.date.accessioned2021-10-27T21:26:26Zen_AU
dc.date.available2021-10-27T21:26:26Zen_AU
dc.date.issued2016-11-29en_AU
dc.date.statistics2021-10-13en_AU
dc.description.abstractHigh-pressure neutron diffraction is always challenging, but it can offer several advantages over high-pressure X-ray diffraction to make meeting those challenges worthwhile. In addition to the usual higher sensitivity to low-X elements, notably hydrogen, and to magnetic moments, the low absorption by many pressure cell materials can yield greater reciprocal space coverage for single crystals. The low scattering power usually requires considerably larger sample volumes than with X-rays, but for the same reason the cell-wall materials can be quite thick. Common cell designs include He-gas cells and simple clamp cells, opposed piston cells (e.g. Bloch, McWhan), opposed-anvil cells (e.g. diamond anvil cell, Paris-Edinburgh cell), and multi-anvil cells, each adapted to sample volume, accessibility, pressure, and other external parameters, especially temperature, that suit the scientific question of interest. State-of-the art experiments using each cell type will be described. A special challenge in high-pressure diffraction is to perform neutron and X-ray experiments on the same material under the same conditions. Previously, this meant using different cells and samples with achieving identical pressures a hit-or-miss affair. This has all changed with the recent demonstration on KOALA on the OPAL research reactor that modern neutron Laue diffraction can be performed on the same sample in the same diamond-anvil cell as used for laboratory X-ray experiments [1].en_AU
dc.identifier.citationMcIntyre, G. J., Binns, J., & Parsons, S. (2016). High-pressure single-crystal neutron diffraction. Paper presented at 13th AINSE-ANBUG Neutron Scattering Symposium, Sydney, NSW, Australia, 29-30 November 2016.en_AU
dc.identifier.conferenceenddate30 November 2016en_AU
dc.identifier.conferencename13th AINSE-ANBUG Neutron Scattering Symposiumen_AU
dc.identifier.conferenceplaceSydney, NSW, Australiaen_AU
dc.identifier.conferencestartdate29 November 2016en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/12135en_AU
dc.language.isoenen_AU
dc.publisherAustralian Institute of Nuclear Science and Engineeringen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectX-ray diffractionen_AU
dc.subjectPressure range mega pa 10-100en_AU
dc.subjectMagnetic momentsen_AU
dc.subjectHydrogenen_AU
dc.subjectMonocrystalsen_AU
dc.subjectLaue methoden_AU
dc.subjectOPAL Reactoren_AU
dc.titleHigh-pressure single-crystal neutron diffractionen_AU
dc.typeConference Abstracten_AU
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