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