Bragg Institute

Specifications

  • Beam line: CG3 (cold neutrons)
  • Position: Upstream of PLATYPUS reflectometer
  • Estimated peak beam flux at sample: øB = 700,000 n cm-2 s-1 (30x higher compared to NIST BT-5 instrument)
  • Solid source angle: ΔΩSource = 8.3·10-7 sr
  • Premonochromators: Two bent vertically focusing, low-mosaic crystals, Si(111) and Si(311), fixed Bragg angle of θBragg = 45°
  • Wavelengths: λSi(111) = 4.43 Å and λSi(311) = 2.32 Å to accommodate for weakly and strongly scattering samples
  • Wavelength resolution: Δλ/λ = 4%
  • Monochromator and analyser channel-cut perfect crystals: Si(111) and Si(311), interchangeable
  • Minimum momentum transfer: qmin = 3·10-5 Å-1
  • Optional: Bent Si(111) analyser crystal for high intensity/low resolution measurements, e.g. for kinetics