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X-Ray Microscopy

Equipment

X-Ray Microscope XRM II

Source: Customized JEOL JSM-7100F Vacc 30kV Imax 400nA
Reflection Target: Nanostructured molybdenum and tungsten
Detector: Photon-counting direct-converting X-ray detector with 1024x512 pixels
Magnification: up to 1000 Resolution: down to 50nm Fully 3D imaging possible through piezo-powered rotational axis

Scanning Electron Microscope

SEI Resolution:            1.2 nm @ 30kV
Magnification:              10 to 1 000 000
Accelerating Voltage:  0.2 to 30 kV
Current:                          10^-12 to 4*^10^-7 A
Electron Gun:                 In-lens Schottky field emission gun

  • Source: Rigaku microfocus-source with rotating anode (capacity: 1,2 kW)

  • Multilayer: Parabolic Goebel mirror for the Cu-Kα-line at 1.54 Å

  • Collimators: 3 motorised collimators each with 4 individually mobile hybrid-blades (monocrystal)

  • Axes: 3-linear axes each for detector- and positioning of sample with an additional 360°-rotation achse for rotatability of sampler

  • Sample Environment: Holding device for up to 8 solid samples, capillary holding device for up to 10 capillaries, holding device with heating for 1 capillary (temperature range: -5 – 80 °C)

  • Detectors: Dectris EIGER 1M (1035 x 1065 Pixel, Pixel size: 75 µm)

Liquid metal jet anode (LMJ)

The experiment is set up in an inter-locked x-ray hutch with 6 mm lead-shielding. The sample stage and the detector are built on a vibration damped granite base, both their axes are motorized. The maximum focus-detector distance equals 1.40 m.

Source: Excillum JXS D1 with specs:

  • 70 kV max. acceleration voltage
  • 200W max. output power
  • 10 mu min. electron focus
  • Target: liquid Ga-In-Sn alloy

Sample stage

  • 2 circle goniometer (X-Huber, Germany)
  • sample lift (X-Huber, Germany)
  • sample translation (Micos PI GmbH, Germany)
  • continuous rotation (Leuven Air Bearing, Belgium)
  • piezoelectric 2-axis fine positioning (atocube, Germany)

Scintillator-based indirect detector

  • P43 high-resolution phosphor screen (Proxivision, Germany)
  • Rodenstock XR-Heliflex lens
  • Nikkor Telephoto lens
  • Andor NEO sCMOS detector (2180 x 2560 pixels, 100 fps)
  • max. field of view 33.3 mm x 28.3 mm (13 mu pixelsize)

Tasks

  • phase contrast and holo-CT of biological specimen
  • in situ fast CT for materials testing / fatigue
  • novel detector development (high-res and high-speed)