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Updated: Aug 23, 2026

Scattering And Absorption of Light in Planetary Regoliths
Published on: July 1, 2019
A scattering filter for energy-dispersive optics
M Hagelstein1, U Lienert, T Ressler
1European Synchrotron Radiation Facility, BP 220, F-38043 Grenoble CEDEX, France.
Abstract:
A filtering technique to remove parasitic scattering from X-ray absorption spectra that are acquired in energy-dispersive mode has been developed and tested at the European Synchrotron Radiation Facility. The improved set-up removes small-angle scattering of the sample or the windows of sample cells which may spoil the energy resolution or reduce the intensity of prominent features in the absorption spectrum, such as the white line at the Pt L(III) edge. The sample is placed behind the curved monochromator and between two plane perfect crystals in the Bonse-Hart configuration. The dispersion of the Bonse-Hart double-crystal camera is matched to the dispersion of the curved monochromator by inclining the scattering planes of the two optical elements against each other.
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