Ursula Keller wins “Swiss Nobel” Marcel Benoist Prize- for pioneering work in ultrafast lasers
MUST2022 Conference- a great success!
New scientific highlights- by MUST PIs Wörner, Chergui, and Richardson
FELs of Europe prize for Jeremy Rouxel- “Development or innovative use of advanced instrumentation in the field of FELs”
Ruth Signorell wins Doron prizefor pioneering contributions to the field of fundamental aerosol science
New FAST-Fellow Uwe Thumm at ETH- lectures on Topics in Femto- and Attosecond Science
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New scientific highlight- by MUST PIs Milne, Standfuss and Schertler
EU XFEL Young Scientist Award for Camila Bacellar,beamline scientist and group leader of the Alvra endstation at SwissFEL
Prizes for Giulia Mancini and Rebeca Gomez CastilloICO/IUPAP Young Scientist Prize in Optics & Ernst Haber 2021
Nobel Prize in Chemistry awarded to RESOLV Member Benjamin List- for the development of asymmetric organocatalysis
NCCR MUST at Scientifica 2021- Lightning, organic solar cells, and virtual molecules

Attosecond soft-X-ray and high-harmonic spectroscopies: bridging the complexity gap

Date Di, 19.10.2021 - Di, 19.10.2021
Time 16:00
Speaker Prof. Hans Jakob Wörner
Location Online
Program One of the remaining challenges for attosecond spectroscopy is its extension to complex systems, such as large molecules, molecular aggregates or nanoparticles in solution. X-ray spectroscopy offers an attractive approach to this goal, owing to its element specificity and site sensitivity. In this lecture, I will discuss the development of table-top soft-X-ray spectroscopy and its application to observing the rearrangement of unoccupied molecular states during chemical reactions [1]. The generation of isolated attosecond soft-X-ray pulses with a duration of only 43 attoseconds has established the current world record of the shortest light pulse ever measured [2]. The spectroscopic application of such pulses has revealed the fastest conical-intersection dynamics observed to date, i.e. the sub-7-femtosecond electronic relaxation from the A to the X state in the ethylene cation [3]. Turning from the gas phase to the liquid phase, I will discuss recent results including the observation of suppressed dissociation of ionized pyridine in solution, as well as the ultrafast proton transfer of ionized urea dimers in aqueous solution. These results demonstrate the potential of attosecond soft-X-ray spectroscopy in addressing complex systems.
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