Dynamical theory calculations of spin-echo resolved grazing-incidence scattering from a diffraction grating

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dc.contributor.authorAshkar, Ren_AU
dc.contributor.authorStonaha, Pen_AU
dc.contributor.authorWashington, ALen_AU
dc.contributor.authorShah, VRen_AU
dc.contributor.authorFitzsimmons, MRen_AU
dc.contributor.authorMaranville, Ben_AU
dc.contributor.authorMajkrzak, CFen_AU
dc.contributor.authorLee, WTen_AU
dc.contributor.authorSchaich, WLen_AU
dc.contributor.authorPynn, Ren_AU
dc.date.accessioned2013-11-19T22:50:05Zen_AU
dc.date.available2013-11-19T22:50:05Zen_AU
dc.date.issued2010-06-01en_AU
dc.date.statistics2013-11-20en_AU
dc.description.abstractNeutrons scattered or reflected from a diffraction grating are subject to a periodic potential analogous to the potential experienced by electrons within a crystal. Hence, the wavefunction of the neutrons can be expanded in terms of Bloch waves and a dynamical theory can be applied to interpret the scattering phenomenon. In this paper, a dynamical theory is used to calculate the results of neutron spin-echo resolved grazing-incidence scattering (SERGIS) from a silicon diffraction grating with a rectangular profile. The calculations are compared with SERGIS measurements made on the same grating at two neutron sources: a pulsed source and a continuous wave source. In both cases, the spin-echo polarization, studied as a function of the spin-echo length, peaks at integer multiples of the grating period but there are some differences between the two sets of data. The dynamical theory explains the differences and gives a good account of both sets of results. © 2010, Wiley-Blackwell.en_AU
dc.identifier.citationAshkar, R., Stonaha, P., Washington, A. L., Shah, V. R., Fitzsimmons, M. R., Maranville, B., Majkrzak, C. F., Lee, W. T., Schaich, W. L., & Pynn, R. (2010). Dynamical theory calculations of spin-echo resolved grazing-incidence scattering from a diffraction grating. Journal of Applied Crystallography. 43, 455-465. doi:10.1107/s0021889810010642en_AU
dc.identifier.govdoc5132en_AU
dc.identifier.issn0021-8898en_AU
dc.identifier.journaltitleJournal of Applied Crystallographyen_AU
dc.identifier.pagination455-465en_AU
dc.identifier.urihttp://dx.doi.org/10.1107/s0021889810010642en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/4978en_AU
dc.identifier.volume43en_AU
dc.language.isoenen_AU
dc.publisherWiley-Blackwellen_AU
dc.subjectNeutronsen_AU
dc.subjectScatteringen_AU
dc.subjectCrystalsen_AU
dc.subjectAtomsen_AU
dc.subjectFilmsen_AU
dc.subjectElectronsen_AU
dc.titleDynamical theory calculations of spin-echo resolved grazing-incidence scattering from a diffraction gratingen_AU
dc.typeJournal Articleen_AU
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