Welcome to the User Wiki for the Medium Energy X-ray Spectroscopy beamlines (MEX-1 and MEX-2).

Potential users MUST CONTACT BEAMLINE STAFF at as-mex@ansto.gov.au and discuss the proposed measurements before submitting their proposal

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

STEP 1. Preparing a MEX Proposal Preparing your MEX proposal MEX Proposal Writing Guidelines	STEP 2. Preparing for Beamtime Preparing for your beamtime MEX-1 MEX-2	STEP 3. After your Beamtime Data analysis https://asuserwiki.atlassian.net/wiki/spaces/UO/pages/1655734273

STEP 1. Preparing a MEX Proposal Preparing your MEX proposal MEX Proposal Writing Guidelines	STEP 2. Preparing for Beamtime Preparing for your beamtime MEX-1 MEX-2	STEP 3. After your Beamtime Data analysis https://asuserwiki.atlassian.net/wiki/spaces/UO/pages/1655734273

Choosing an X-ray Absorption Spectroscopy Beamline

MEX-1 Accessible Edges

MEX-1	MEX-2
Room temperature transmission and fluorescence.	Room temperature drain current and fluorescence in vacuum. Fluorescence in helium
3.5 - 13.8 keV	1.7 - 3.2 keV
Ex situ samples ONLY	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)	Estimated scan duration ~20 mins XANES

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

MEX1 and MEX2 are new beamlines which came online in late 2022 and early 2023. Our current capability is as of Dec 2024

For more information on MEX-1 and MEX-2, please see the linked pages below and the ANSTO website.