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MO: Fachverband Molekülphysik
MO 6: Molecular Spectroscopy of Liquid Jets II
MO 6.5: Vortrag
Dienstag, 11. März 2025, 12:00–12:15, HS XV
Photoelectron spectroscopy from microjets and flatjets — •Bruno Credidio1, Dominik Stemer1, Hanns Christian Schewe2, Sebastian Malerz1, Michele Pugini1, Florian Trinter1, Henrik Haak1, Uwe Hergenhahn1, Gerard Meijer1, Srephan Thürmer3, and Bernd Winter1 — 1Fritz Haber Institute of the Max Planck Society, Berlin, Germany — 2Czech Academy of Sciences, Prague, Czech Republic — 3Kyoto University, Kyoto, Japan
Among its various successful applications, LJ-PES (Liquid Jet Photoelectron Spectroscopy) enables the the study of biological molecules in their environment of relevance, i.e., aqueous phase. Despite that, the curved geometry of a LJ had hampered, e.g., soft X-ray absorption studies. This has prompted the development of planar flatjets (FJs) which has now evolved into a well-matured technique. Several experimental approaches have been realized, and their applicability to PES will be evaluated. Furthermore, the larger surface area of FJs is well suited for exploring angular-resolved scattering of a molecular beam from a planar liquid, including aqueous solution. The FJ geometry is also superior when detecting Photoelectron Angular Distributions (PADs). Our other focus here is on the unique ability to generate a flowing well-defined liquid-liquid interface in vacuum, acting as a steady-state chemical reactor and defined reaction time, accessible by IR, optical and X-ray photon detection. I will finally discuss the generation of an electric potential across the FJ that may be used to modify solution-vacuum structural and electric properties.
Keywords: microjet; flatjet; liquid jet; photoelectron spectroscopy; aqueous solution