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MO: Fachverband Molekülphysik

MO 13: Posters 1: Ultrafast Spectroscopy

MO 13.18: Poster

Dienstag, 6. März 2018, 16:15–18:15, Orangerie

pump-probe experiments with molecules at FLASH — •Yifan Liu¹, Kirsten Schnorr¹, Georg Schmid¹, Sven Augustin¹, Severin Meister¹, Hannes Lindenblatt¹, Thomas Ding¹, Yuhai Jiang², Rolf Treusch³, Stefan Düsterer³, Mathieu Gisselbrecht⁴, Christian Burger⁵, Matthias Kuebel⁵, Matthias Kling⁵, Artem Rudenko⁶, Claus Dieter Schroeter¹, Thomas Pfeifer¹, and Robert Moshammer¹ — ¹Max-Planck-Institut Fur Kernphysik, Saupfercheckweg 1, Heidelberg, 69117, Germany — ²Shanghai Advanced Research Institute, Zhangjiang, Shanghai, 201210, China — ³Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22607, Hamburg, Germany — ⁴Lund University, Lund, Post Box 118, 22100, Sweden — ⁵Max Planck Institute of Quantum Optics, Hans-Kopfermann-Straße 1, D-85748 Garching, Germany — ⁶J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas, 66506, USA

With a pump-probe experimental scheme, the ultrafast temporal revolution molecular dynamics of N2 and O2 were investigated at the Free-Electron-LASer in Hamburg (FLASH). Firstly, IR-assisted XUV multiphoton experiment of N2 was performed at FLASH in combination with a synchronized femtosecond optical laser. The fragmentation and multiple ionization dynamics of N2 have been investigated using a Reaction-Microscope (ReMi). We find the sequential ionization is to be the dominant and efficient process for molecules in X-ray regime. The second experiment is that we use the THz electric field to trace the autoionization process happening in molecular oxygen.