Energy Dispersive Diffraction

The experimental station EDDI (Energy Dispersive Diffraction) is a fixed station at the 7T-MPW-EDDI beamline (more information about the beamline can be found here). The beamline provides the direct white photon beam emitted by the 7T multipole wiggler and is operated in the energy-dispersive mode of diffraction. For the experiments two diffractometers with Eularian cradle segments (GE Inspection Technologies) are at the disposal for light and heavy weight samples. For the acquisition of the diffraction patterns as well as the fluorescence signals two Germanium solid state detectors (Canberra) are available.
The flexible EDDI station/beamline is suitable for multi-purpose applications, such as:

  • phase analysis (qualitative and quantitative)
  • residual stress analysis
  • texture analysis
  • microstructure analysis (domain sizes and rms microstrains)
  • in-situ investigations (e. g. under high temperature or external load)
  • high spatially resolved measurements (slit widths up to appr. 10 µm possible)
  • simultaneous measurements with two diffraction detectors
  • simultaneous in-situ tomography or radioscopy and diffraction

experimental station EDDI

experimental station EDDI

Liste von Publikationen
Station data
Monochromator no
Experiment in vacuum nein
Temperature range room temperature ... 1100°C (furnace)
Detector two Ge solid state detectors (Canberra)
resolution: 160 eV (at 10 keV) and 420 eV (at 100 keV)
Manipulators 5-axes Eulerian cradle (for samples up to 1 - 2 kg)
4-axes Eularian cradle (for samples up to 50 kg)
hexapod (PI GmbH)
tensile-compressive loading device (Walter+Bai) up to ±20 kN
furnace (Anton-Paar DHS 1100) between 25°C and 1100°C
two detector setup possible
other sample environments and user sample environments possible
energy range white beam (range between 5 keV and 150 keV)


Crystallography (material sciences)

A detailed beamline and experimental endstation description and a list of publications can be found here.