SAMOP 2023 – scientific programme
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MO: Fachverband Molekülphysik
MO 4: Ultrafast Dynamics I (joint session MO/A)
MO 4.2: Talk
Tuesday, March 7, 2023, 11:30–11:45, F102
UV and Mid-IR Photo-induced Dissociation Dynamics of Solvated (Bio)Molecular Complexes — •Mukhtar Singh1,2,3, Matthew Scott Robinson1,2,3, Hubertus Bromberger1,2, Jolijn Onvlee1,3, Sebastian Trippel1,2, and Jochen Küpper1,2,3 — 1Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Hamburg — 2Center for Ultrafast Imaging, Universität Hamburg — 3Department of Physics, Universität Hamburg
We present the imaging of ultrafast UV- and thermal-energy-induced chemical dynamics of micro-solvated (bio)molecular complexes probed with strong-field ionization techniques [1]. We produce a pure gas-phase indole-water sample using a combination of a cold molecular beam and the electrostatic deflector [2]. To study the induced dynamics, we set up both a UV and a mid-IR pump-probe experiment, in which a 269 nm and 2.9 µm laser pulses were used to excite the system, respectively. A 1.3 µm laser pulses was used for ionizing the system. First experiments focused on the ion imaging of t he UV and mid-IR-triggered systems. Furthermore, we will report on efforts to use laser-induced electron diffraction (LIED) [3,4] to probe the molecular dynamics to obtain structural information with atomic resolution.
[1] J Onvlee, et al., Nat Commun., DOI: 10.1038/s41467-022-33901-w
[2] S. Trippel, et al., Rev. Sci. Instrum. 89, 096110 (2018)
[3] J. Wiese, et al., Phys. Rev. Research 3, 013089 (2021)
[4] E. T. Karamatskos, et al., J. Chem. Phys. 150, 244301(2019)