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MEX Beamlines

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. Please contact us before submitting a proposal.

XAS experiment.png

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

 

MEX1_periodic_table (2).png

 

 

MEX2_periodic_table (1).png

MEX-1 Capabilities

IMG_7932.jpg

MEX-2 Capabilities

IMG_7933.jpg

3.5 - 13.8 keV

1.7 - 3.2 keV

Room temperature transmission and fluorescence mode, solid and liquid

Cryogenic (min 9 Kelvin) transmission and fluorescence mode (contact us before submitting a proposal)

Microprobe fluorescence mode

Room temperature drain current and fluorescence in vacuum, solids only

Fluorescence in helium (contact us for liquids)

Ex situ samples

In situ (contact us for potential dry in situ capability tests Eg battery cycling)

Ex situ samples ONLY

Maximum beam size (horizontal x vertical; beam size can be reduced from the maximum using slits)

5 mm x 0.5 mm

Maximum beam size (horizontal x vertical; beam size can be reduced from the maximum using slits)

5 mm x 3 mm

Estimated scan duration

~20 mins XANES

~35 mins EXAFS (duplicates or triplicates recommended)

(Contact us about faster slew scanning)

Estimated scan duration

~20 mins XANES

MEX-1 OR XAS? Follow this flowchart!

XAFS decision tree.jpg

For more information about the XAS Beamline, please visit the XAS User Wiki.

MEX-1 and MEX-2 are new beamlines which came online in late 2022 and early 2023. Our current capability is as of March 2025. For more information on MEX-1 and MEX-2, please see the linked pages below and the ANSTO website.

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