Time-resolved diffraction with an optimized short pulse laser plasma X-ray source

Mohammadmahdi Afshari; Philipp Krumey; Dennis Menn; Matthieu Nicoul; Fabian Brinks; Alexander Tarasevitch; Klaus Sokolowski-Tinten

doi:10.1063/1.5126316

arXiv · 2001.02049

Time-resolved diffraction with an optimized short pulse laser plasma X-ray source

Mohammadmahdi Afshari·Philipp Krumey·Dennis Menn·Matthieu Nicoul·Fabian Brinks·Alexander Tarasevitch·Klaus Sokolowski-Tinten

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Abstract

We present a set-up for time-resolved X-ray diffraction based on a short pulse, laser-driven plasma X-ray source. The employed modular design provides high flexibility to adapt the set-up to the specific requirements (e.g. X-ray optics, sample environment) of particular applications. The configuration discussed here has been optimized towards high angular/momentum resolution and uses K$_{\alpha}$-radiation (4.51 keV) from a Ti wire-target in combination with a toroidally bent crystal for collection, monochromatization and focusing of the emitted radiation. $2\times 10^5$ Ti-K$_{\alpha1}$ photons per pulse with $10^{-4}$ relative bandwidth are delivered to the sample at 10 Hz repetition rate. This allows for high dynamic range ($10^4$) measurements of transient changes of the rocking curves of materials as for example induced by laser-triggered strain waves.

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Mohammadmahdi Afshari, Philipp Krumey, Dennis Menn, Matthieu Nicoul, Fabian Brinks, Alexander Tarasevitch, Klaus Sokolowski-Tinten. 2019-12-13. Time-resolved diffraction with an optimized short pulse laser plasma X-ray source. https://doi.org/10.1063/1.5126316

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