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arXiv · 1512.06231

Visualizing aerosol-particle injection for diffractive-imaging experiments

Salah Awel·Richard A. Kirian·Niko Eckerskorn·Max Wiedorn·Daniel A. Horke·Andrei V. Rode·Jochen Küpper·Henry N. Chapman
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Abstract

Delivering sub-micrometer particles to an intense x-ray focus is a crucial aspect of single-particle diffractive-imaging experiments at x-ray free-electron lasers. Enabling direct visualization of sub-micrometer aerosol particle streams without interfering with the operation of the particle injector can greatly improve the overall efficiency of single-particle imaging experiments by reducing the amount of time and sample consumed during measurements. We have developed in-situ non-destructive imaging diagnostics to aid real-time particle injector optimization and x-ray/particle-beam alignment, based on laser illumination schemes and fast imaging detectors. Our diagnostics are constructed to provide a non-invasive rapid feedback on injector performance during measurements, and have been demonstrated during diffraction measurements at the FLASH free-electron laser.

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Salah Awel, Richard A. Kirian, Niko Eckerskorn, Max Wiedorn, Daniel A. Horke, Andrei V. Rode, Jochen Küpper, Henry N. Chapman. 2015-12-19. Visualizing aerosol-particle injection for diffractive-imaging experiments. https://doi.org/10.1364/oe.24.006507

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