School of Earth and Environment
Electron Optics Image


The Earth & Environment Electron Optics facility forms part of the Leeds Electron Microscopy & Spectroscopy Centre (LEMAS). This unit combines the facilities of the School of Earth & Environment and the Institute for Materials Research, as a one-stop-shop, within the Engineering Building. We provide a specialist analytical service for research and teaching within the University of Leeds, nationally and for commercial customers.

Services Offered

Scanning Electron Microscopy (SEM), Electron Probe Microanalysis (EPMA), Cathodoluminescence (CL), Electron Backscatter Diffraction (EBSD).

Specialist Areas

Our facility is one of the world leaders in the geological application of SEM analysis, particularly for crystallographic analysis using electron backscattered diffraction (EBSD).


  • Scanning Electron Microscope – FEI Quanta 650 FEG-ESEM with SE, BSE and full environmental (ESEM) imaging capabilities. Also fitted with a KE Centaurus panchromatic CL detector, an Oxford X-max 80 SDD EDS with AZtec 3.3 software and an Oxford/HKL Nordlys S EBSD system.
  • Scanning Electron Microscope - Tescan VEGA3 XM. Tungsten source machine with large chamber, high sample throughput capability and variable pressure. It is equipped with an Oxford X-max 150 SDD EDS running Aztec 3.3 software, also RGB filtered CL system.
  • Electron microprobe – JEOL JXA8230 with a LaB6 electron source carrying 5 wavelength spectrometers (two H-type) and 14 analysing crystals including large crystals and LDE laminates for light element analysis. The instrument has an integrated JEOL SDD EDS system and runs both a JEOL windows interface and Probe Software's "Probe for EPMA"

Further Information