Towards a detailed resolution smearing kernel for time-of-flight neutron reflectometers

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dc.contributor.authorNelson, Aen_AU
dc.date.accessioned2014-06-22T23:55:34Zen_AU
dc.date.available2014-06-22T23:55:34Zen_AU
dc.date.issued2013-10-01en_AU
dc.date.statistics2014-06-23en_AU
dc.description.abstractIn this article a `detailed' form of the resolution kernel used to analyse data from reactor-based time-of-flight (TOF) neutron reflectometers is derived. In contrast to monochromatic neutron reflectometers, where the resolution kernel is close to Gaussian, TOF neutron reflectometers can have trapezoidal resolution kernels. This is a consequence of the disc chopper systems used to pulse the beam having a wavelength uncertainty that is rectangular in shape. The effect of using the detailed and approximate kernels is compared, with the main effects occurring where the width of the kernel is approximately the same as the width of the features in the reflectivity curve, i.e. around the critical edge and at high Qz. The difference between the two kernels is greatest when the wavelength and angular components are of different sizes. © 2013, Wiley-Blackwell.en_AU
dc.identifier.citationNelson, A. R. J. (2013). Towards a detailed resolution smearing kernel for time-of-flight neutron reflectometers. Journal of Applied Crystallography, 46(part 5), 1338-1346. doi:10.1107/S0021889813021936en_AU
dc.identifier.govdoc5436en_AU
dc.identifier.issn0021-8898en_AU
dc.identifier.issuePart 5en_AU
dc.identifier.journaltitleJournal of Applied Crystallographyen_AU
dc.identifier.pagination1338-1346en_AU
dc.identifier.urihttp://dx.doi.org/10.1107/S0021889813021936en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/5703en_AU
dc.identifier.volume46en_AU
dc.language.isoenen_AU
dc.publisherWiley Blackwellen_AU
dc.subjectNeutron reflectorsen_AU
dc.subjectTime-of-flight spectrometersen_AU
dc.subjectResolutionen_AU
dc.subjectNeutronsen_AU
dc.subjectWavelengthsen_AU
dc.subjectReflectivityen_AU
dc.titleTowards a detailed resolution smearing kernel for time-of-flight neutron reflectometersen_AU
dc.typeJournal Articleen_AU
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