The multipurpose time-of-flight neutron reflectometer "Platypus" at Australia's OPAL reactor

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dc.contributor.authorJames, Men_AU
dc.contributor.authorNelson, Aen_AU
dc.contributor.authorHolt, SAen_AU
dc.contributor.authorSaerbeck, Ten_AU
dc.contributor.authorHamilton, WAen_AU
dc.contributor.authorKlose, Fen_AU
dc.date.accessioned2011-08-11T05:46:20Zen_AU
dc.date.available2011-08-11T05:46:20Zen_AU
dc.date.issued2011-03-11en_AU
dc.date.statistics2011-08-04en_AU
dc.description.abstractIn this manuscript we describe the major components of the Platypus time-of-flight neutron reflectometer at the 20 MW OPAL reactor in Sydney, Australia. Platypus is a multipurpose spectrometer for the characterisation of solid thin films, materials adsorbed at the solid-liquid interface and free-liquid surfaces. It also has the capacity to study magnetic thin films using spin-polarised neutrons. Platypus utilises a white neutron beam (lambda=2-20 angstrom) that is pulsed using boron-coated disc chopper pairs; thus providing the capacity to tailor the wavelength resolution of the pulses to suit the system under investigation. Supermirror optical components are used to focus, deflect or spin-polarise the broad bandwidth neutron beams, and typical incident spectra are presented for each configuration. A series of neutron reflectivity datasets are presented, indicating the quality and flexibility of this spectrometer. Minimum reflectivity values of <10(-7) are observed: while maximum thickness values of 325 nm have been measured for single-component films and 483 nm for a multilayer system. Off-specular measurements have also been made to investigate in-plane features as opposed to those normal to the sample surface. Finally, the first published studies conducted using the Platypus time-of-flight neutron reflectometer are presented. (C) 2011 Elsevier B.V. All rights reserved.en_AU
dc.identifier.citationJames, M., Nelson, A., Holt, S.A., Saerbeck, T., Hamilton, W.A., Klose, F. (2011). The multipurpose time-of-flight neutron reflectometer "Platypus" at Australia's OPAL reactor. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 632(1), 112-123. doi:10.1016/j.nima.2010.12.075en_AU
dc.identifier.govdoc3443en_AU
dc.identifier.issn0168-9002en_AU
dc.identifier.issue1en_AU
dc.identifier.journaltitleNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipmenten_AU
dc.identifier.pagination112-123en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.nima.2010.12.075en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/3673en_AU
dc.identifier.volume632en_AU
dc.language.isoenen_AU
dc.publisherElsevier Science BVen_AU
dc.subjectCold neutronsen_AU
dc.subjectThin filmsen_AU
dc.subjectReflectivityen_AU
dc.subjectSpectrometersen_AU
dc.subjectMembranesen_AU
dc.subjectOPAL Reactoren_AU
dc.titleThe multipurpose time-of-flight neutron reflectometer "Platypus" at Australia's OPAL reactoren_AU
dc.typeJournal Articleen_AU
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