Overview
Bruker D8 Discover diffractometer with 4 circles (ω, 2θ, χ, φ) and x, y, z motors. A laser video microscope allows sample positioning and spatially resolved work.
Optics
By default parallel beam optics with CuKα1,2 radiation in line focus, normally used in reflection mode, has been used in-plane, glancing angle and transmission mode.
Incident beam: a graded mirror gives an intense quasi parallel beam, pinholes reduce beam size.
Secondary beam: parallel plate collimator or slits set up as beam tunnel for scintillation counter.
Auto-absorber. Some slits are motorized.
Detectors
Single point scintillation detector or LynxEye position sensitive detector.
Resolution
- 0.0001° minimum step in source and detector
- ~0.04° best resolution in ω
- ~0.04° best resolution in 2θ
