Université de Fribourg

Charge migration and charge transfer in molecular systems

Wörner, Hans Jakob ; Arrell, a), Christopher A. ; Banerji, Natalie ; Cannizzo, Andrea ; Chergui, Majed ; Das, Akshaya K. ; Hamm, Peter ; Keller, Ursula ; Kraus, Peter M. ; Liberatore, Elisa ; Lopez-Tarifa, Pablo ; Lucchini, Matteo ; Meuwly, Markus ; Milne, Chris ; Moser, Jacques-E. ; Rothlisberger, Ursula ; Smolentsev, Grigory ; Teuscher, Joël ; Bokhoven, Jeroen A. van ; Wenger, Oliver

In: Structural Dynamics, 2017, vol. 4, no. 6, p. 061508

The transfer of charge at the molecular level plays a fundamental role in many areas of chemistry, physics, biology and materials science. Today, more than 60 years after the seminal work of R. A. Marcus, charge transfer is still a very active field of research. An important recent impetus comes from the ability to resolve ever faster temporal events, down to the attosecond time scale. Such...

Université de Fribourg

Establishing nonlinearity thresholds with ultraintense X-ray pulses

Szlachetko, Jakub ; Hoszowska, Joanna ; Dousse, Jean-Claude ; Nachtegaal, Maarten ; Błachucki, Wojciech ; Kayser, Yves ; Sà, Jacinto ; Messerschmidt, Marc ; Boutet, Sebastien ; Williams, Garth J. ; David, Christian ; Smolentsev, Grigory ; Bokhoven, Jeroen A. van ; Patterson, Bruce D. ; Penfold, Thomas J. ; Knopp, Gregor ; Pajek, Marek ; Abela, Rafael ; Milne, Christopher J.

In: Scientific Reports, 2016, vol. 6, p. 33292

X-ray techniques have evolved over decades to become highly refined tools for a broad range of investigations. Importantly, these approaches rely on X-ray measurements that depend linearly on the number of incident X-ray photons. The advent of X-ray free electron lasers (XFELs) is opening the ability to reach extremely high photon numbers within ultrashort X-ray pulse durations and is leading...