KMC-2 Diffraction

KMC-2 Diffraction

The instrument Diffraction is a 6-circle goniometer in psi-geometry. The sample is mounted on a motorized stage that allows movement in all directions. Two detectors are available: A scintillation detector (Cyberstar) and an area detector (Bruker Vantec). 2Θ angles up to 140° are accessible with the area detector. The instrument is located at the KMC-2 beamline, which provides X-ray radiation with very stable energies in the range between 4 and 14 keV. This combination covers most scattering requirements.

Sample environments available at KMC-2 include:

  • HTF-KMC2, a custom-build Be-domed furnace with in-build turbopump for experiments up to 1000 °C in ultra-high vacuum (10-6 mbar); this furnace is restricted to Θ-2Θ geometry. 
  • Anton Paar DHS 1100 furnace for experiments up to 1100 °C in air, inert gas or mild vacuum (10 mbar) without limitations on the movement of the goniometer.
  • CCR-XRD closed cycle refrigerator for low-temperatur experiments (15 - 450 K) and controlled gas loading up to 150 kPa.
  • CRYO-GAS-JET capillary system for experiments with small sample volumes at low temperatures (20 - 300 K) and controlled atmospheres up to 1000 kPa.
  • HOT-AIR-JET capillary system for experiments with small sample volumes at high temperatures (300 - 700 K) and controlled atmospheres up to 1000 kPa.


Instrument applications

  • Grazing incidence diffraction (GID)
  • Reciprocal space mapping of single crystal Bragg reflections
  • Diffuse scattering
  • Powder diffraction
  • Anomalous diffraction
  • Reflectometry

List of publications
Station data
Temperature range 20-1000 °C
Pressure Range
Detector Scintillator, Area (Bruker Vantec)
Manipulators Huber 6-circle goniometer
Sample holder compatibility
Beamline(s)

KMC-2

Methods

Reflectometry, Single Crystal Diffraction, Crystallography (material sciences), Surface Diffraction, Powder Diffraction, WAXS