Welcome to I18 - The Microfocus Beamline

I18 uses a 27mm-period undulator to give a bright energy-tuneable X-ray microbeam with an accessible energy range from 2.0 to 20.7keV. The beamline is optimized to perform micro-X-ray fluorescence (XRF) mapping studies, micro-X-ray absorption spectroscopy and micro-X-ray diffraction. Microfocus spectroscopy is highly important for the analysis of heterogeneous materials in all fields of science in microscopic detail.

 

 

Suitable for experiments requiring:

·         Soft to hard-energy X-rays

·         Beam size down to 2 µm x 2.5 µm.

·         Time-resolved in situ measurements

·         Monochromatic and tuneable X-ray source

·         Fluorescence and diffraction techniques, including their combination during one experiment

·         A range of unique sample environments provided by users (please discuss with beamline staff)

 

We are able to perform a range of experimental techniques on the micrometre scale:

·         XRF tomography (time-resolved & static)

·         Powder diffraction (time-resolved & static)

·         XAS & XRF (time-resolved & static)

·         XRF and powder diffraction mapping

·         ReflEXAFS

 

I18 has been utilised for a large range of scientific studies including:

·         Geochemistry and space minerology

·         Biochemistry in Tumour and Cancer treatment

·         Analysis of agrochemicals

·         Environmental and heritage research

·         Catalysis structure and mechanistic pathways

·         Ultrafast pump-probe XAS

 

 

Also available are a range of sample environments for users experiments:

·         Small and large sample stages

·         Sample heating (25 ^oC – 1400 ^oC)

·         Helium enclosure

·         In–situ Raman

·         Electron yield cell

·         He/N₂ cryostat (>10 K)

·         Laser interlock

 

I18 can accommodate a range of complex sample environments which the users can bring and install for their beamtime.

 

More information about the beamline has been published:

J. Frederick W. Mosselmans, Paul D. Quinn, Andrew J. Dent et al., Journal of Synchrotron Radiation. 2009, 16, 818-824 (link).