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The XAS beamline employs hard X-rays
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across the range 6.
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3 - 31 keV (“Mn to Sb”). 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
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two ‘beamline modes’ covering
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lower energies (6.
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3-19 keV
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/ Mode
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X)
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and
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higher energies (15-31 keV
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/ Mode
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Y). Note that in order to
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optimise a beamline mode, or to switch between modes, approximately one day of user downtime is required. Therefore, all Mode
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X experiments are scheduled back-to-back, followed by all Mode
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Y experiments,
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each user cycle.
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If |
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you would like to analyse edges in different |
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beamline modes, |
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you MUST submit a separate proposal for each mode. We recommend that |
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such proposals have the same content but different sample tables, and be designated ‘Part 1,' ‘Part 2,' |
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Elements in Red are analysed in Mode 1, Blue are commonly analysed in Mode 2, and Yellow are commonly analysed in Mode 3.
Copper XANES can be analysed in Mode 1.
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With the two new MEX Beamlines now online, 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 at and above the Mn 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 (>1000 ppm). |
or ‘Mode X’, ‘Mode Y’, in their proposal title. |
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Sample environments and experimental kit, incl. in-situ: see here! |
| Info |
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Sample types and preparation: see here! |
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Choosing scan parameters: see here! |
