Ursula Keller wins “Swiss Nobel” Marcel Benoist Prize
Farewell: the NCCR MUST ended 
MUST2022 Conference
New scientific highlights
FELs of Europe prize for Jeremy Rouxel
Ruth Signorell wins Doron prize
New FAST-Fellow Uwe Thumm at ETH
International Day of Women and Girls in Science
New scientific highlight
EU XFEL Young Scientist Award for Camila Bacellar,
Prizes for Giulia Mancini and Rebeca Gomez Castillo
Nobel Prize in Chemistry awarded to RESOLV Member Benjamin List
Hans Jakob Wörner invited to give the „New Horizons Solvay Lectures” 
Unusual keynote talk at an international scientific conference
NCCR MUST at Scientifica 2021Probing electronic processes in large molecules with attosecond time resolution
| Date | Do, 13.09.2018 | |
| Time | 16:45 | |
| Speaker | Prof. Dr. Francesca Calegari Attosecond Science Group, Center for Free-Electron Laser Science (CFEL), DESY, Hamburg | |
| Location | ETH Hönggerberg, HCI H 2.1 | |
| Program | Attosecond science is nowadays a well-established research field, which offers formidable tools for the investigation and control of electronic processes [1,2]. The possibility to study molecules of increasing complexity with attosecond time resolution paves the way to disclosing the role of the electron dynamics in the photo-chemistry and photo-biology of complex systems. In this context, we have recently demonstrated that attosecond pulses can initiate charge migration between different functional groups of aromatic amino-acids [3]. In this talk I will first present a time-resolved study of photo-fragmentation of the nucleobase adenine, one of the key building blocks of DNA. Our most intriguing observation is that a stable dication of the parent molecule can be produced if (and only if) the probing NIR pulse is very briefly delayed from the XUV pulse. Our experimental and theoretical findings indicate that this short delay corresponds to the lifetime of the inner valence hole. The process also evidences the presence of a laser-assisted stabilization of the nucleobase. In the second part of the talk I will show the results we have recently obtained for a very large polyatomic molecule, namely the C60 molecule. Here we have investigated delays in photoemission after exciting the Giant surface Plasmonic Resonance (GPR) around 20 eV. Clear signatures of the collective electron dynamics initiated by the XUV pulse can be extracted from the experimental data. |
|
| Link | FastLab Laser Seminars | |
