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X-ray Absorption Spectroscopy => XANES-Maps

Fe oxide sediments and Leptothrix bacterium sheath. a) and b): area for XANES-Maps. c): ex-tracted XANES spectra. 100 energies were chosen around the P K-edge from 2100 eV to 2200 eV. 42 x 18 pixel with 100 nm step size. Acquisition time was changed from 100 ms in the pre-edge region before the absorption edge to 50 ms after the absorption edge.

In cooperation with Karin Eusterhues and Jürgen Thieme X-ray absorption near edge spectroscopy (XANES) maps at the P K-edge on leptothrix filaments were recorded. First measurements show promising results, but data evaluation is still ongoing.

Due to the large solid angle of detection even single pixel XANES-spectra with 50 ms exposure time above the absorption edge and 100 ms to 150 ms below show good statistics.

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