1-kHz table-top ultrashort hard x-ray source for time-resolved x-ray protein

Abstract : We describe a compact, reliable, and high-average-power femtosecond x-ray source and its first application to diffraction on protein crystal. The setup relies on a homemade Ti: sapphire system delivering 12 mJ at a 1 kHz repetition rate, associated with a small vacuum chamber especially designed for laser-plasma interaction and x-ray applications. This device allows the generation of 5×109 photons/s/sr at 8 keV and optimized x-ray irradiation of the studied sample, which can be placed close to the source. We present the diffraction pattern of a protein crystal in a divergent beam geometry, which is a first step to a subpicosecond x-ray diffraction experiment.
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Adeline Bonvalet, Adeline Darmon, Jean-Christophe Lambry, Jean-Louis Martin, Patrick Audebert. 1-kHz table-top ultrashort hard x-ray source for time-resolved x-ray protein. Optics Letters, Optical Society of America, 2006, 31 (18), pp.2753. ⟨10.1364/OL.31.002753⟩. ⟨hal-00097211⟩

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