The XAS beamline employs hard X-rays, spanning 5 - 31 keV. Please see the XAS page on the Australian Synchrotron website here for more details on the XAS photon delivery system. The energy range is accessed via three ‘ beamline ‘beamline modes’ covering the low (5-9 keV aka Mode 1), medium (9-19 keV aka Mode 2), and high (19-31 keV aka Mode 3) energies, which allows access to most of the periodic table. Note that to setup a beamline mode, or to switch beamline modebetween modes, approximately one day of downtime is required. Therefore, all Mode 1 experiments are bunched together, all Mode 2 bunched etc.scheduled back-to-back, followed by all Mode 2 experiments, then all of Mode 3.
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If users would like to analyse edges in different energy modes, they MUST submit a separate proposal for each mode. We recommend that separate proposals have the same content but different sample tables, and be designated ‘Part 1,' ‘Part 2,' etc. |
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With the two new MEX Beamlines coming online from 2023, it is important to reflect on the capability overlap between XAS and MEX. For example, |
operationally, the XAS Beamline is particularly well suited to energies above the Cr K-edge and as such users may prefer to approach the MEX Beamline for the lower energies (MEX covers energies down to about 1.7 keV). |
Whilst MEX offers less flux than XAS, this should not pose a problem for transmission or moderately dilute samples measured in fluorescence mode. |
The information in these pages is designed to help users to understand our experimental capabilities and sample requirements and to aid in experimental planning:
XAS Capabilities: Information regarding sample environments