MEX Beamlines
Welcome to the User Wiki for the Medium Energy X-ray Absorption Spectroscopy Beamlines (MEX-1 and MEX-2)
Potential NEW Users MUST CONTACT BEAMLINE STAFF at as-mex@ansto.gov.au to discuss the proposed measurements before submitting their proposal
Round 3 2025 Update - We will be accepting proposals for microspectroscopy at MEX1 for the first time in 2025/r3. See here for more detail on microspectroscopy capabilities at MEX1. If you are interested in submitting an application to use the MEX1 scanning fluorescence microprobe you MUST CONTACT BEAMLINE STAFF at as-mex@ansto.gov.au AFTER having read the following information.
Round 3 2025 Update - We will be accepting proposals for the Cryostat. Please contact us before submitting a proposal.
Round 3 2025 Update - We will be accepting proposals for in-situ battery cycling. For SULFUR BATTERY CYCLING, please contact us before submitting a proposal.
STEP 1. Preparing a MEX Proposal
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Choosing an X-ray Absorption Spectroscopy Beamline
MEX-1 Accessible Edges
3.5 - 13.8 keV
MEX-2 Accessible Edges
1.7 - 3.2 keV
MEX-1 Capabilities | MEX-2 Capabilities |
3.5 - 13.8 keV | 1.7 - 3.2 keV |
Acquisition modesRoom temperature transmission and fluorescence mode, solid and liquid Cryogenic (minimum 8 Kelvin) transmission and fluorescence mode In situ battery cycling transmission and fluorescence mode Microprobe fluorescence mode | Acquisition modesRoom temperature drain current and fluorescence in vacuum Fluorescence in helium (contact us for liquids) In situ battery cycling (contact us) |
Sample typesSolids, liquids, films, biological, minerals etc | Sample typesSolids, liquids, films, biological, minerals etc |
Beam sizeVertically focused beam size: up to 5 mm horizontal x 0.5 mm vertical Vertically and horizontally focused beam size: up to 1 mm horizontal x 200 um vertical | Beam sizeCollimated only. Max beam size: 5 mm horizontal x 3 mm vertical. Can decrease size to 100 um with slits |
Scan times~5-10 mins | Scan times~15 mins XANES ~25 mins EXAFS if energy range permits |
MEX-1 OR XAS? Follow this flowchart!
For more information about the XAS Beamline, please visit the XAS User Wiki.