Two dimensional high energy x-ray powder diffraction

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dc.contributor.authorYeoh, LAen_AU
dc.contributor.authorLiss, KDen_AU
dc.contributor.authorBuslaps, Ten_AU
dc.date.accessioned2021-09-21T01:17:30Zen_AU
dc.date.available2021-09-21T01:17:30Zen_AU
dc.date.issued2006-12-04en_AU
dc.date.statistics2021-08-31en_AU
dc.description.abstractHigh-energy synchrotron radiation (around 100 keV) combined with a two-dimensional detector boasts the advantage of high penetration power for bulk studies of materials and simple setup geometries. Typically, the diffraction pattern is obtained for a several millimeter thick sample using a transmission geometry setup and the resulting concentric Debye-Scherrer rings are recorded on a flat detector. The radii of the rings and their intensities reflect the structure and phase composition of the sample and the ring morphology can be evaluated, revealing grain statistics. Grain correlations across phase boundaries or domain relations can also be identified and sometimes a local reciprocal lattice of a crystallite can be mapped. Furthermore, anisotropies in intensity and ring radius reveal texture and lattice strain, respectively. Data acquisition times for these patterns range from below a second to few minutes, allowing for in-situ registration during temperature cycles, resulting in a huge amount of individual diffraction patterns which have to be evaluated. As a result, algorithms need to be scripted to automate and batch-process the data evaluation. Currently code is being written in SCILAB, a public available software package, to extract the 1D pattern and other parameters for further analysis with greater efficiency. This method can also be extended to the study of many other processes; such as thermo-mechanical deformation in light metals, like titanium aluminides, magnesium, oxidation layers from steel processing and amorphous materials to mention a few.en_AU
dc.identifier.citationYeoh, L., Liss, K. D., Buslaps, T. (2006). Two dimensional high energy x-ray powder diffraction. Paper presented at the Australian Institute of Physics 17th National Congress 2006, Brisbane Convention and Exhibition Centre, Brisbane Australia, Sunday 3 - Friday 8 December 2006. Retrieved from: https://www.aip.org.au/resources/Documents/Congress/AIPCongress-2006-Program.pdfen_AU
dc.identifier.conferenceenddate8 December 2006en_AU
dc.identifier.conferencenameAustralian Institute of Physics 17th National Congress 2006en_AU
dc.identifier.conferenceplaceBrisbane, Australiaen_AU
dc.identifier.conferencestartdate3 December 2006en_AU
dc.identifier.urihttps://www.aip.org.au/resources/Documents/Congress/AIPCongress-2006-Program.pdfen_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/11753en_AU
dc.language.isoenen_AU
dc.publisherAustralian Institute of Physicsen_AU
dc.subjectPhysicsen_AU
dc.subjectSynchrotron radiationen_AU
dc.subjectPoweren_AU
dc.subjectMaterialsen_AU
dc.subjectDiffractionen_AU
dc.subjectGeometryen_AU
dc.subjectDebye-Scherrer methoden_AU
dc.subjectRingsen_AU
dc.titleTwo dimensional high energy x-ray powder diffractionen_AU
dc.typeConference Abstracten_AU
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