X-ray Diffraction and X-ray Fluoresence (XRD/XRF)

X-ray Diffraction

Equipment

The department has a Bruker XRD and a Philips XRD providing powder diffraction analysis.

There is an International Centre for Diffraction Data (ICDD) database for indexing patterns using specialised software package EVA® which identifies what components are present as well as access to the Topas® software which is a modelling programme to identify what quantities are present.

External users can access this software for data processing.

The Bruker D8 is equipped with a LynxEye detector and a 90 position auto sampler. These provide advantages in terms of intensity, peak-to-background ratio and accurate profile fitting.

  • It is configured in vertical theta/2theta Bragg-Brentano (a common design widely used for powder diffractometers) and has a scanning range of 2-150°
  • It has the capability to use different radiation sources (Cu Kα and Co Kα)
  • The instrument can run samples on either reflection or capillary stages
  • Anton Paar TTK-450 temperature control chamber

Measurement capabilities are:

  • Qualitative phase analysis
  • Quantitative phase analysis
  • Structure solution and refinement
  • Crystallite size determination 
  • Temperature control experiments

The Philips PW1050 uses a Cu Kα source and is fitted with a secondary graphite monochromator (an optical device used to select radiation of a single wavelength)

  • The Philips has a scanning range of 3-105°

Measurement capabilities are:

  • Qualitative phase analysis
  • Quantitative clay analysis using the RIR (relative internal ratio) method

The Olympus Innovex X-5000 portable XRF is available for fieldwork and

  • has a Rh source
  • capable of analysing powder or solid samples
  • fast analysis times – e.g. 3 minutes.

Who can use the facility?

We are committed to sharing our facilities and associated expertise with external academic and industrial collaborators.

Location

School of Earth and Environment

Members of staff

Academic Lead: Dr Thomas Mueller 
Technical Lead: Lesley Neve