Erlangen 2018 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 22: Posters 3: Experimental and Theoretical Techniques and High Resolution Spectroscopy

MO 22.5: Poster

Donnerstag, 8. März 2018, 16:15–18:15, Zelt West

New beamlines for molecular pump-probe experiments in the XUV and SXR — Matthew Robinson, •Christian Matthaei, and Markus Gühr — Institut für Physik und Astronomie, Universität Potsdam

Until recently the only place to perform pump-probe experiments with femtosecond Soft X-Ray (SXR) probe pulses was at the few large X-ray Free Electron Laser (XFEL) facilities, like the Linac Coherent Light Source (LCLS) and the European XFEL. With recent innovations in the field of High Harmonic Generation (HHG) it has become possible to create photons with energies in excess of the carbon K-edge [1,2,3], thus allowing time resolved X-ray probing in a small lab setting.

We are currently constructing such a set-up at Potsdam University, which will be used for the study of small molecules in the gas phase. Extreme UV and SXR pulses are produced using HHG, followed by a set-up for time-resolved atom-specific spectroscopy. In these studies a thorough understanding of nonadiabatic molecular dynamics is our goal.

[1] S. L. Cousin et al., Optics Letters, 39, pp. 5383-5386, 2014

[2] Y. Pertot et al., Science, 355, pp. 264-267, 2017

[3] T. Popmintchev et al., Science, 336, pp. 1287-1291, 2012