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  • Multipurpose Powder X-ray Diffraction ("DaVinci 2")
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Description

Bruker D8 A25 DaVinci X-ray Diffractometer and  LynxEye™ SuperSpeed Detector. Used for non-standard set-ups.

Can be used with either:

1) Mo radiation and focussing mirror optics.

2a) Cu radiation, Bragg Brentano

2b) Cu radiation, parrallel beam optics

Current status

Currently the Cu-tube is in use, and the xyz-sample stage is mounted. It is easy to swap between regular Bragg-Brentano and parallel beam optics used for Grazing-Incidence Diffraction.

 

The multipurpose instrument (DaVinci2) with xyz-stage mounted. Photo: Kristin H. Wells.

Well suited for (Cu radiation):
  • Grazing-incidence diffraction
  • Small-angle X-ray Scattering (under development)
Well suited for (Mo radiation):
  • Determination of precise crystal lattice parameters
  • Detailed analysis of materials with known or partially known structures (lattice parameters, bond lengths and angles, thermal parameters)
  • Completion of partially solved structures
  • Elimination of preferred orientation
  • Suppression of fluorescence from Co, Mn and Fe based samples thanks to Mo radiation
  • Pair distribution functions (total scattering analysis)
  • Absorbing samples in transmission
  • In situ studies of solid/gas reactions in flow cell
  • In situ studies on batteries
Not so good for (Mo radiation):
  • High d-spacing materials (e.g. large pore zeolites, MOFs)- the low angle peaks may be missed due to the short wavelength.
Stages available:
  • Capillary spinner (mounted most of the time)
  • Transmission sample holder stage
  • Standard sample stage
  • Heat blower for capillary stage
  • Flipstick 9 position sample changer (to come)
  • Automated XYZ stage (to come)
  • Possibility to mount furnace (in future)

Photo: Kristin H. Wells

Instrument specifications

Typically 3-155 degrees 2θ (0.46 Å-1 < Q < 17.3 Å-1, 13.6 Å > d > 0.36 Å) (for Mo-radiation)

Before you begin:

Equipment may not be used without training. See XRD-lab info.

Booking the instrument

Use the booking system.

In-situ experiments, custom build

 

 

 

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