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As a general rule, higher energy X-rays are more penetrating so a higher energy can help absorption effects.
Example of a pattern with absorption effects. |
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Avoiding Fluorescence/ Absorption edges
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by plotting the Mass Absorption Coefficient between 10 and 22 keV to cover the beamline energy range.
An example of a |
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compound containing Y (K-edge of 17 keV) collected at 18 keV |
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Compared to the same samples at |
15 keV: |
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Beamline flux
The flux of the beamline is maximised between 12 - 16 keV, so you might need to count longer at higher energies as can be seen from this figure.
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