MEX Beamlines

Owned by Microscopy Cluster (Unlicensed)
Last updated: Nov 14, 2024 by AS Spectroscopy Wiki
2 min read

Welcome to the User Wiki for the Medium Energy X-ray Spectroscopy beamlines (MEX1 and MEX2).

The full energy range for MEX-1 is 3.5 - 13.8 keV.

The full energy range for MEX-2 is 1.7 - 3.2 keV.

We are not currently offering microprobe capability. The capability schedule below will be updated when the microprobe is ready to be rolled out.

*** Potential users MUST CONTACT BEAMLINE STAFF and discuss the proposed measurements before submitting their proposal ***

Contact us at: as-mex@ansto.gov.au

For more information on MEX1 and MEX2, please see the linked pages below and the ANSTO website.

Choosing an X-ray absorption spectroscopy beamline

MEX-1 Accessible Edges

MEX-2 Accessible Edges

 

MEX1_periodic_table (2).png

 

 

MEX2_periodic_table (1).png

 

Still not sure? Follow this flowchart!

 

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

 

MEX capability schedule

MEX1 and MEX2 are new beamlines which came online in late 2022 and early 2023. Our current capability is outlined below (updated March 2024).

 

MEX-1

MEX-2

Capability

  • Room temperature transmission and fluorescence.

  • Room temperature drain current and fluorescence in vacuum.

  • Fluorescence in helium

Energy range

3.5 - 13.8 keV

1.7 - 3.2 keV

Experiment type

Ex situ samples ONLY.

Ex situ samples ONLY.

Scan parameters

 

MEX-1

MEX-2

 

MEX-1

MEX-2

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

5 x 0.5 mm

5 x 3 mm

Estimated scan duration

~20 mins XANES

~35 mins EXAFS (duplicates or triplicates recommended)

~30 mins XANES

 

 

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