Polarization "down under": the polarized time-of-flight neutron reflectometer PLATYPUS
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Date
2012-08-01
Journal Title
Journal ISSN
Volume Title
Publisher
American Institute of Physics
Abstract
This review presents the implementation and full characterization of the polarization equipment of the time-of-flightneutron reflectometer PLATYPUS at the Australian Nuclear Science and Technology Organisation (ANSTO). The functionality and efficiency of individual components are evaluated and found to maintain a high neutron beam polarization with a maximum of 99.3% through polarizing Fe/Si supermirrors. Neutron spin-flippers with efficiencies of 99.7% give full control over the incident and scattered neutron spin direction over the whole wavelength spectrum available in the instrument. The first scientific experiments illustrate data correction mechanisms for finite polarizations and reveal an extraordinarily high reproducibility for measuring magnetic thin film samples. The setup is now fully commissioned and available for users through the neutron beam proposal system of the Bragg Institute at ANSTO. © 2012, American Institute of Physics.
Description
Keywords
Reflectivity, Polarization, Neutrons, Spin, Neutron beams, Thin films
Citation
Saerbeck, T., Klose, F., Le Brun, A. P., Füzi, J., Brûlé, A., Nelson, A., Holt, S. A., & James, M. (2012). Polarization "down under": the polarized time-of-flight neutron reflectometer PLATYPUS. Review of Scientific Instruments, 83(8), 081301. doi:10.1063/1.4738579