Freiburg 2024 – scientific programme
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MO: Fachverband Molekülphysik
MO 18: Poster: Cluster
MO 18.8: Poster
Wednesday, March 13, 2024, 17:00–19:00, Tent C
Density optimization of a pure indole-water molecular beam for thermal-energy studies — •Hossein Saberiansani1,2,3, Matthew Scott Robinson1,2,3, Mukhtar Singh1,2,3, Hubertus Bromberger1,2, 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
Microsolvated systems, wherein a small number of solvent molecules are clustered around a solute, provide a unique window into solvation effects present in the bulk [1]. In particular, the interaction of biomolecules such as indole with water provides ideal model systems for ultrafast dynamics studies of ambient-temperature/thermal-energy chemistry [2]. To study such systems, we need to start with a pure and high-density molecular beam. Using high-pressure supersonic expansions and the electrostatic deflector, we are able to produce such samples [3]. Here, I will detail how our molecular beam was optimized by tuning valve conditions, and how the absolute density measurements were done using strong-field ionization techniques.
[1] L. He, et int.(6 authors), J. Küpper, S. Trippel, J. Phys. Chem. Lett.14, 10499 (2023)
[2] M. S. Robinson and J. Küpper, Phys. Chem. Chem. Phys.20, 20205 (2023)
[3] Y.-P Chang, et int.(2 authors), J. Küpper, Int. Rev. Phys. Chem.34, 557 (2015)