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Hannover 2016 – scientific programme

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A: Fachverband Atomphysik

A 29: Atomic clusters (with MO)

A 29.3: Poster

Wednesday, March 2, 2016, 16:30–19:00, Empore Lichthof

A new He droplet spectrometer for nanoplasma experiments — •Dominik Schomas1, Robert Moshammer2, Thomas Pfeifer2, and Marcel Mudrich11Albert-Ludwigs-Universtität, Freiburg — 2Max-Planck-Institut für Kernphysik, Heidelberg

Ultrashort laser pulses have opened up a new field of ultrafast spectroscopy with femtosecond and even attosecond time resolution. With such short pulses we want to explore the ultrafast ignition dynamics of He nanodroplets turning into a nanoplasma induced by dopant atoms such as other rare gases. The dynamics of ignition and explosion of the plasma depends on the number and the kind of dopants but also on the droplet size. We want to build a new apparatus to investigate those dependencies and to resolve the ignition dynamics in real time on an attosecond time scale via pump probe experiments. For our experiments we have designed a velocity-map imaging (VMI) spectrometer which is capable of mapping the occurring high-energy electrons from Coulomb-exploded clusters. Furthermore, the VMI technique allows us to investigate anisotropy effects in photoelectron emission.

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