Wednesday, 11/27/2019, 05:00 PM
Seminar room HI-Jena, Fröbelstieg 3
Core-level Spectroscopy with X-ray Free Electron Lasers
Dr. Jakub Szlachetko
Institute of Nuclear Physics, Polish Academy of Sciences, Krakow
Stochastic processes are highly relevant in research fields as different as neuroscience, economy, ecology, chemistry, and fundamental physics. However, due to their intrinsic unpredictability, stochastic mechanisms are very challenging for any kind of investigations and practical applications. I will report on the deliberate use of stochastic X-ray pulses in two-dimensional spectroscopy to the simultaneous mapping of unoccupied and occupied electronic states of atoms in a regime where the opacity and transparency properties of matter are subject to the incident intensity and photon energy. I will present formalism which enables investigations of the response of the electronic structure to irradiation with intense X-ray pulses while the time structure of the incident pulses is preserved.