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@europeanxfel.bsky.social Sep 9, 2026, 3:20 PM

A new capability of the European XFEL has enabled a big step towards watching changes in #nanoparticles or #biomolecules on natural timescale: the X-ray laser can produce subsequent flashes of two different colours, that can image a particle twice within #femtoseconds.
Details: xfel.eu

$A new capability of the European XFEL has recently enabled a big step towards the realization of the dream to watch changes in nanoparticles or biomolecules on their natural timescale: the X-ray laser can produce subsequent flashes of two different colours, that are bright enough to image a particle twice within femtoseconds. However, a big challenge remained: no detector is fast enough to record the two snapshots separately—they end up on top of each other in a single image, comparable to a double-exposure photograph. Scientists now successfully employed two complementary methods to disentangle two diffraction patterns captured by the same X-ray detector. The results by an international team of researchers have been published their results in two separate articles in Nature Communications. While both take advantage of the different colours or photon energies, one method exploits the capability of the detector to discern energy levels for each individual pixel, while the other uses mathematical reconstructions. Its inventors call the latter method Dichography. All Details on www.xfel.eu$

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