SAMOP 2023 – wissenschaftliches Programm
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SYAD: Symposium SAMOP Dissertation Prize 2023
SYAD 1: SAMOP Dissertation Prize Symposium (SYAD)
SYAD 1.2: Hauptvortrag
Montag, 6. März 2023, 15:00–15:30, E415
From femtoseconds to femtometers – controlling quantum dynamics in molecules with ultrafast lasers — •Patrick Rupprecht — Max-Planck-Institut für Kernphysik
Core-level absorption spectroscopy has proven to be a powerful tool to gain a deeper understanding of ultrafast quantum dynamics in atoms, molecules, and solid-state materials. Especially the capability of x-ray transient absorption spectroscopy (XTAS) to elucidate dynamics in neutral molecules on the atto- and femtosecond time scales stands out.
In my talk, I will present a novel source for few-cycle, center-wavelength-tunable (λc = 1 − 2 µ m) laser pulses in combination with a flexible transient absorption setup at the Max Planck Institute for Nuclear Physics. These experimental capabilities are utilized to control the quantum-mechanical part of the electron–electron interaction, the exchange energy, for the first time by perturbing gaseous SF6 molecules with infrared pulses of variable intensity of up to 2 × 1014 W/cm2. In a second experiment, time-resolved x-ray absorption spectroscopy is used to elucidate vibrational molecular dynamics in the perturbative limit with an unprecedented spatial precision of 14 fm. These XTAS studies pave the way for new ultrafast chemical control schemes as well as precision metrology on molecular bonds.