Erlangen 2018 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 25: Poster Session I
A 25.27: Poster
Dienstag, 6. März 2018, 16:15–18:15, Redoutensaal
A source for helium droplets and liquid jets for time-resolved diffractive imaging experiments with high-harmonic pulses — •Katharina Kolatzki1,2, Nils Monserud1, Arnaud Rouzée1, Mario Sauppe1,2, Bernd Schütte1, Julian Zimmermann1,2, Thomas Möller2, Marc J.J. Vrakking1, and Daniela Rupp1,2 — 1MBI, Germany — 2IOAP TU Berlin, Germany
Our recent demonstration of single-particle coherent diffractive imaging (CDI) with a femtosecond high-harmonics generation (HHG) source [D. Rupp et al., Nat. Comm. 8, 493 (2017)] opens the door to the investigation of excitation and ionization dynamics in extended matter. These processes take place in the attosecond time domain. In principle, attosecond pulses can be generated by HHG sources, but the achievable intensities are too low for single-shot CDI. For a diffractive imaging approach, it is necessary to average over multiple single shot diffraction images, which requires a constant target. To make this procedure feasible, we intend to build a source for extremely large helium droplets and liquid jets, which will serve as a reproducible target. Key ideas and design parameters will be discussed.